25428732 has 24 divisors (see below), whose sum is σ = 67810176. Its totient is φ = 7265328.

The previous prime is 25428727. The next prime is 25428749. The reversal of 25428732 is 23782452.

It is a super-2 number, since 2×25428732² = 1293240822255648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25428693 and 25428702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151278 + ... + 151445.

It is an arithmetic number, because the mean of its divisors is an integer number (2825424).

Almost surely, 2^25428732 is an apocalyptic number.

It is an amenable number.

25428732 is an abundant number, since it is smaller than the sum of its proper divisors (42381444).

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

25428732 is a wasteful number, since it uses less digits than its factorization.

25428732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302737 (or 302735 counting only the distinct ones).

The product of its digits is 26880, while the sum is 33.

The square root of 25428732 is about 5042.6909482934. The cubic root of 25428732 is about 294.0638021556.

The spelling of 25428732 in words is "twenty-five million, four hundred twenty-eight thousand, seven hundred thirty-two".