25455330 has 64 divisors (see below), whose sum is σ = 70243200. Its totient is φ = 6552000.

The previous prime is 25455323. The next prime is 25455343. The reversal of 25455330 is 3355452.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 25455294 and 25455303.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6205 + ... + 9455.

It is an arithmetic number, because the mean of its divisors is an integer number (1097550).

Almost surely, 2^25455330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25455330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35121600).

25455330 is an abundant number, since it is smaller than the sum of its proper divisors (44787870).

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

25455330 is a wasteful number, since it uses less digits than its factorization.

25455330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3296 (or 3290 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 27.

The square root of 25455330 is about 5045.3275413991. The cubic root of 25455330 is about 294.1662949256.

It can be divided in two parts, 2545 and 5330, that added together give a triangular number (7875 = T₁₂₅).

The spelling of 25455330 in words is "twenty-five million, four hundred fifty-five thousand, three hundred thirty".