25568626940 has 24 divisors (see below), whose sum is σ = 53705208480. Its totient is φ = 10225338048.

The previous prime is 25568626903. The next prime is 25568626949. The reversal of 25568626940 is 4962686552.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25568626949) 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, 30920 + ... + 228239.

It is an arithmetic number, because the mean of its divisors is an integer number (2237717020).

Almost surely, 2^25568626940 is an apocalyptic number.

25568626940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25568626940 is an abundant number, since it is smaller than the sum of its proper divisors (28136581540).

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

25568626940 is a wasteful number, since it uses less digits than its factorization.

25568626940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264101 (or 264099 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 53.

The spelling of 25568626940 in words is "twenty-five billion, five hundred sixty-eight million, six hundred twenty-six thousand, nine hundred forty".