25145397952 has 56 divisors (see below), whose sum is σ = 54654968160. Its totient is φ = 11425075200.

The previous prime is 25145397919. The next prime is 25145397961. The reversal of 25145397952 is 25979354152.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 25145397952.

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, 366924 + ... + 430027.

Almost surely, 2^25145397952 is an apocalyptic number.

It is an amenable number.

25145397952 is an abundant number, since it is smaller than the sum of its proper divisors (29509570208).

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

25145397952 is a wasteful number, since it uses less digits than its factorization.

25145397952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797009 (or 796999 counting only the distinct ones).

The product of its digits is 3402000, while the sum is 52.

The spelling of 25145397952 in words is "twenty-five billion, one hundred forty-five million, three hundred ninety-seven thousand, nine hundred fifty-two".