25465128 has 32 divisors (see below), whose sum is σ = 68560800. Its totient is φ = 7835328.

The previous prime is 25465127. The next prime is 25465129. The reversal of 25465128 is 82156452.

It is an interprime number because it is at equal distance from previous prime (25465127) and next prime (25465129).

It is a super-3 number, since 3×25465128³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (25465127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40498 + ... + 41121.

It is an arithmetic number, because the mean of its divisors is an integer number (2142525).

Almost surely, 2^25465128 is an apocalyptic number.

It is an amenable number.

25465128 is an abundant number, since it is smaller than the sum of its proper divisors (43095672).

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

25465128 is a wasteful number, since it uses less digits than its factorization.

25465128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81641 (or 81637 counting only the distinct ones).

The product of its digits is 19200, while the sum is 33.

The square root of 25465128 is about 5046.2984453954. The cubic root of 25465128 is about 294.2040325577.

The spelling of 25465128 in words is "twenty-five million, four hundred sixty-five thousand, one hundred twenty-eight".