25697480 has 32 divisors (see below), whose sum is σ = 59815800. Its totient is φ = 9924096.

The previous prime is 25697473. The next prime is 25697521. The reversal of 25697480 is 8479652.

It can be written as a sum of positive squares in 4 ways, for example, as 14394436 + 11303044 = 3794^2 + 3362^2 .

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, 9917 + ... + 12236.

Almost surely, 2^25697480 is an apocalyptic number.

25697480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25697480 is an abundant number, since it is smaller than the sum of its proper divisors (34118320).

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

25697480 is a wasteful number, since it uses less digits than its factorization.

25697480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22193 (or 22189 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 25697480 is about 5069.2681917610. The cubic root of 25697480 is about 295.0961287793.

The spelling of 25697480 in words is "twenty-five million, six hundred ninety-seven thousand, four hundred eighty".