25513462506402 has 24 divisors (see below), whose sum is σ = 59531412515484. Its totient is φ = 7850296155744.

The previous prime is 25513462506377. The next prime is 25513462506439. The reversal of 25513462506402 is 20460526431552.

25513462506402 is a `hidden beast` number, since 2 + 5 + 5 + 13 + 4 + 625 + 0 + 6 + 4 + 0 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 24997190078961 + 516272427441 = 4999719^2 + 718521^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54515945293 + ... + 54515945760.

Almost surely, 2^{25513462506402} is an apocalyptic number.

25513462506402 is an abundant number, since it is smaller than the sum of its proper divisors (34017950009082).

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

25513462506402 is a wasteful number, since it uses less digits than its factorization.

25513462506402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109031891074 (or 109031891071 counting only the distinct ones).

The product of its (nonzero) digits is 1728000, while the sum is 45.

Adding to 25513462506402 its reverse (20460526431552), we get a palindrome (45973988937954).

The spelling of 25513462506402 in words is "twenty-five trillion, five hundred thirteen billion, four hundred sixty-two million, five hundred six thousand, four hundred two".