25498795764 has 48 divisors (see below), whose sum is σ = 64214282048. Its totient is φ = 7828593408.

The previous prime is 25498795757. The next prime is 25498795807. The reversal of 25498795764 is 46759789452.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 25498795695 and 25498795704.

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, 107542 + ... + 250125.

Almost surely, 2^25498795764 is an apocalyptic number.

It is an amenable number.

25498795764 is an abundant number, since it is smaller than the sum of its proper divisors (38715486284).

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

25498795764 is a wasteful number, since it uses less digits than its factorization.

25498795764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358144 (or 358142 counting only the distinct ones).

The product of its digits is 152409600, while the sum is 66.

The spelling of 25498795764 in words is "twenty-five billion, four hundred ninety-eight million, seven hundred ninety-five thousand, seven hundred sixty-four".