25402405532552 has 16 divisors (see below), whose sum is σ = 47630284340940. Its totient is φ = 12700996374976.

The previous prime is 25402405532551. The next prime is 25402405532657. The reversal of 25402405532552 is 25523550420452.

It can be written as a sum of positive squares in 2 ways, for example, as 13725054010756 + 11677351521796 = 3704734^2 + 3417214^2 .

It is not an unprimeable number, because it can be changed into a prime (25402405532551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25275203 + ... + 26261010.

Almost surely, 2^{25402405532552} is an apocalyptic number.

It is an amenable number.

25402405532552 is a deficient number, since it is larger than the sum of its proper divisors (22227878808388).

25402405532552 is a wasteful number, since it uses less digits than its factorization.

25402405532552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51597832 (or 51597828 counting only the distinct ones).

The product of its (nonzero) digits is 2400000, while the sum is 44.

The spelling of 25402405532552 in words is "twenty-five trillion, four hundred two billion, four hundred five million, five hundred thirty-two thousand, five hundred fifty-two".