25513403530 has 32 divisors (see below), whose sum is σ = 46102924224. Its totient is φ = 10165706496.

The previous prime is 25513403501. The next prime is 25513403561. The reversal of 25513403530 is 3530431552.

It is a junction number, because it is equal to n+sod(n) for n = 25513403492 and 25513403501.

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, 2953077 + ... + 2961703.

It is an arithmetic number, because the mean of its divisors is an integer number (1440716382).

Almost surely, 2^25513403530 is an apocalyptic number.

25513403530 is a deficient number, since it is larger than the sum of its proper divisors (20589520694).

25513403530 is a wasteful number, since it uses less digits than its factorization.

25513403530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9750.

The product of its (nonzero) digits is 27000, while the sum is 31.

The spelling of 25513403530 in words is "twenty-five billion, five hundred thirteen million, four hundred three thousand, five hundred thirty".