25905970 has 8 divisors (see below), whose sum is σ = 46630764. Its totient is φ = 10362384.

The previous prime is 25905941. The next prime is 25905991. The reversal of 25905970 is 7950952.

It can be written as a sum of positive squares in 2 ways, for example, as 22762441 + 3143529 = 4771^2 + 1773^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×25905970² = 1342238563281800, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1295289 + ... + 1295308.

Almost surely, 2^25905970 is an apocalyptic number.

25905970 is a deficient number, since it is larger than the sum of its proper divisors (20724794).

25905970 is a wasteful number, since it uses less digits than its factorization.

25905970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2590604.

The product of its (nonzero) digits is 28350, while the sum is 37.

The square root of 25905970 is about 5089.7907619076. The cubic root of 25905970 is about 295.8920427465.

The spelling of 25905970 in words is "twenty-five million, nine hundred five thousand, nine hundred seventy".