25409796078 has 16 divisors (see below), whose sum is σ = 50877156096. Its totient is φ = 8460338040.

The previous prime is 25409796037. The next prime is 25409796101. The reversal of 25409796078 is 87069790452.

It is a congruent number.

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, 2392758 + ... + 2403353.

It is an arithmetic number, because the mean of its divisors is an integer number (3179822256).

Almost surely, 2^25409796078 is an apocalyptic number.

25409796078 is an abundant number, since it is smaller than the sum of its proper divisors (25467360018).

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

25409796078 is a wasteful number, since it uses less digits than its factorization.

25409796078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4796999.

The product of its (nonzero) digits is 7620480, while the sum is 57.

The spelling of 25409796078 in words is "twenty-five billion, four hundred nine million, seven hundred ninety-six thousand, seventy-eight".