25713870 has 64 divisors (see below), whose sum is σ = 75962880. Its totient is φ = 5424768.

The previous prime is 25713869. The next prime is 25713901. The reversal of 25713870 is 7831752.

It is a super-2 number, since 2×25713870² = 1322406220753800, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1980 + ... + 7439.

It is an arithmetic number, because the mean of its divisors is an integer number (1186920).

Almost surely, 2^25713870 is an apocalyptic number.

25713870 is an abundant number, since it is smaller than the sum of its proper divisors (50249010).

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

25713870 is a wasteful number, since it uses less digits than its factorization.

25713870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9449.

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 25713870 is about 5070.8845382241. The cubic root of 25713870 is about 295.1588534465.

It can be divided in two parts, 2571 and 3870, that added together give a triangular number (6441 = T₁₁₃).

The spelling of 25713870 in words is "twenty-five million, seven hundred thirteen thousand, eight hundred seventy".