25235497992 has 32 divisors (see below), whose sum is σ = 63490593600. Its totient is φ = 8358252864.

The previous prime is 25235497961. The next prime is 25235497997. The reversal of 25235497992 is 29979453252.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25235497997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3344892 + ... + 3352427.

It is an arithmetic number, because the mean of its divisors is an integer number (1984081050).

Almost surely, 2^25235497992 is an apocalyptic number.

It is an amenable number.

25235497992 is an abundant number, since it is smaller than the sum of its proper divisors (38255095608).

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

25235497992 is a wasteful number, since it uses less digits than its factorization.

25235497992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6697485 (or 6697481 counting only the distinct ones).

The product of its digits is 12247200, while the sum is 57.

The spelling of 25235497992 in words is "twenty-five billion, two hundred thirty-five million, four hundred ninety-seven thousand, nine hundred ninety-two".