25040025250 has 64 divisors (see below), whose sum is σ = 50491164672. Its totient is φ = 9271416000.

The previous prime is 25040025247. The next prime is 25040025253. The reversal of 25040025250 is 5252004052.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25040025247) and next prime (25040025253).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (25040025253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 108012 + ... + 248488.

It is an arithmetic number, because the mean of its divisors is an integer number (788924448).

Almost surely, 2^25040025250 is an apocalyptic number.

25040025250 is an abundant number, since it is smaller than the sum of its proper divisors (25451139422).

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

25040025250 is a wasteful number, since it uses less digits than its factorization.

25040025250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140548 (or 140538 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The spelling of 25040025250 in words is "twenty-five billion, forty million, twenty-five thousand, two hundred fifty".