25121350252 has 24 divisors (see below), whose sum is σ = 44199319472. Its totient is φ = 12493051200.

The previous prime is 25121350217. The next prime is 25121350277. The reversal of 25121350252 is 25205312152.

It is a self number, because there is not a number n which added to its sum of digits gives 25121350252.

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, 1420102 + ... + 1437682.

Almost surely, 2^25121350252 is an apocalyptic number.

It is an amenable number.

25121350252 is a deficient number, since it is larger than the sum of its proper divisors (19077969220).

25121350252 is a wasteful number, since it uses less digits than its factorization.

25121350252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19489 (or 19487 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 28.

The spelling of 25121350252 in words is "twenty-five billion, one hundred twenty-one million, three hundred fifty thousand, two hundred fifty-two".