25715670 has 32 divisors (see below), whose sum is σ = 62360928. Its totient is φ = 6786048.

The previous prime is 25715639. The next prime is 25715671. The reversal of 25715670 is 7651752.

It is a super-2 number, since 2×25715670² = 1322591367097800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25715671) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1509 + ... + 7328.

It is an arithmetic number, because the mean of its divisors is an integer number (1948779).

Almost surely, 2^25715670 is an apocalyptic number.

25715670 is an abundant number, since it is smaller than the sum of its proper divisors (36645258).

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

25715670 is a wasteful number, since it uses less digits than its factorization.

25715670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8944.

The product of its (nonzero) digits is 14700, while the sum is 33.

The square root of 25715670 is about 5071.0620189463. The cubic root of 25715670 is about 295.1657404370.

The spelling of 25715670 in words is "twenty-five million, seven hundred fifteen thousand, six hundred seventy".