25690680 has 48 divisors (see below), whose sum is σ = 83495880. Its totient is φ = 6850752.

The previous prime is 25690667. The next prime is 25690733. The reversal of 25690680 is 8609652.

It is a super-2 number, since 2×25690680² = 1320022077724800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35322 + ... + 36041.

Almost surely, 2^25690680 is an apocalyptic number.

25690680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25690680 is an abundant number, since it is smaller than the sum of its proper divisors (57805200).

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

25690680 is a wasteful number, since it uses less digits than its factorization.

25690680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71380 (or 71373 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 25690680 is about 5068.5974391344. The cubic root of 25690680 is about 295.0700972942.

The spelling of 25690680 in words is "twenty-five million, six hundred ninety thousand, six hundred eighty".