25905670 has 16 divisors (see below), whose sum is σ = 53291808. Its totient is φ = 8881920.

The previous prime is 25905667. The next prime is 25905673. The reversal of 25905670 is 7650952.

It is an interprime number because it is at equal distance from previous prime (25905667) and next prime (25905673).

It is a super-2 number, since 2×25905670² = 1342207476297800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25905673) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 184971 + ... + 185110.

It is an arithmetic number, because the mean of its divisors is an integer number (3330738).

Almost surely, 2^25905670 is an apocalyptic number.

25905670 is an abundant number, since it is smaller than the sum of its proper divisors (27386138).

25905670 is a wasteful number, since it uses less digits than its factorization.

25905670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370095.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 25905670 is about 5089.7612910627. The cubic root of 25905670 is about 295.8909005650.

The spelling of 25905670 in words is "twenty-five million, nine hundred five thousand, six hundred seventy".