25750740 has 48 divisors (see below), whose sum is σ = 72571968. Its totient is φ = 6822144.

The previous prime is 25750729. The next prime is 25750741. The reversal of 25750740 is 4705752.

It is a super-2 number, since 2×25750740² = 1326201221095200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 25750698 and 25750707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25750741) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8464 + ... + 11096.

It is an arithmetic number, because the mean of its divisors is an integer number (1511916).

Almost surely, 2^25750740 is an apocalyptic number.

25750740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25750740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36285984).

25750740 is an abundant number, since it is smaller than the sum of its proper divisors (46821228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25750740 is a wasteful number, since it uses less digits than its factorization.

25750740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2808 (or 2806 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 25750740 is about 5074.5186963889. The cubic root of 25750740 is about 295.2998578894.

The spelling of 25750740 in words is "twenty-five million, seven hundred fifty thousand, seven hundred forty".