25509740949952 has 112 divisors (see below), whose sum is σ = 61258305931200. Its totient is φ = 10289177690112.

The previous prime is 25509740949949. The next prime is 25509740949961. The reversal of 25509740949952 is 25994904790552.

It is a tau number, because it is divible by the number of its divisors (112).

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, 204419608 + ... + 204544360.

It is an arithmetic number, because the mean of its divisors is an integer number (546949160100).

Almost surely, 2^{25509740949952} is an apocalyptic number.

It is an amenable number.

25509740949952 is an abundant number, since it is smaller than the sum of its proper divisors (35748564981248).

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

25509740949952 is a wasteful number, since it uses less digits than its factorization.

25509740949952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151638 (or 151628 counting only the distinct ones).

The product of its (nonzero) digits is 367416000, while the sum is 70.

The spelling of 25509740949952 in words is "twenty-five trillion, five hundred nine billion, seven hundred forty million, nine hundred forty-nine thousand, nine hundred fifty-two".