25568698940 has 48 divisors (see below), whose sum is σ = 55445698560. Its totient is φ = 9894104640.

The previous prime is 25568698933. The next prime is 25568698951. The reversal of 25568698940 is 4989686552.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2439431 + ... + 2449889.

It is an arithmetic number, because the mean of its divisors is an integer number (1155118720).

Almost surely, 2^25568698940 is an apocalyptic number.

25568698940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25568698940 is an abundant number, since it is smaller than the sum of its proper divisors (29876999620).

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

25568698940 is a wasteful number, since it uses less digits than its factorization.

25568698940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14442 (or 14440 counting only the distinct ones).

The product of its (nonzero) digits is 37324800, while the sum is 62.

The spelling of 25568698940 in words is "twenty-five billion, five hundred sixty-eight million, six hundred ninety-eight thousand, nine hundred forty".