25553340464 has 40 divisors (see below), whose sum is σ = 52137526080. Its totient is φ = 12099067200.

The previous prime is 25553340431. The next prime is 25553340473. The reversal of 25553340464 is 46404335552.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 752819 + ... + 786029.

It is an arithmetic number, because the mean of its divisors is an integer number (1303438152).

Almost surely, 2^25553340464 is an apocalyptic number.

It is an amenable number.

25553340464 is an abundant number, since it is smaller than the sum of its proper divisors (26584185616).

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

25553340464 is a wasteful number, since it uses less digits than its factorization.

25553340464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35769 (or 35763 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 41.

The spelling of 25553340464 in words is "twenty-five billion, five hundred fifty-three million, three hundred forty thousand, four hundred sixty-four".