25011525 has 96 divisors (see below), whose sum is σ = 53139456. Its totient is φ = 10080000.

The previous prime is 25011523. The next prime is 25011527. The reversal of 25011525 is 52511052.

It is an interprime number because it is at equal distance from previous prime (25011523) and next prime (25011527).

It is not a de Polignac number, because 25011525 - 2¹ = 25011523 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25011523) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 352240 + ... + 352310.

It is an arithmetic number, because the mean of its divisors is an integer number (553536).

Almost surely, 2^25011525 is an apocalyptic number.

25011525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

25011525 is an abundant number, since it is smaller than the sum of its proper divisors (28127931).

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

25011525 is a wasteful number, since it uses less digits than its factorization.

25011525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 21.

The square root of 25011525 is about 5001.1523672050. The cubic root of 25011525 is about 292.4466993244.

Adding to 25011525 its reverse (52511052), we get a palindrome (77522577).

The spelling of 25011525 in words is "twenty-five million, eleven thousand, five hundred twenty-five".