25697080 has 16 divisors (see below), whose sum is σ = 57818520. Its totient is φ = 10278816.

The previous prime is 25697051. The next prime is 25697083. The reversal of 25697080 is 8079652.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25697083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321174 + ... + 321253.

Almost surely, 2^25697080 is an apocalyptic number.

25697080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25697080 is an abundant number, since it is smaller than the sum of its proper divisors (32121440).

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

25697080 is a wasteful number, since it uses less digits than its factorization.

25697080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 642438 (or 642434 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 25697080 is about 5069.2287381810. The cubic root of 25697080 is about 295.0945976426.

It can be divided in two parts, 256 and 97080, that added together give a cube (97336 = 46³).

The spelling of 25697080 in words is "twenty-five million, six hundred ninety-seven thousand, eighty".