245647978250 has 32 divisors (see below), whose sum is σ = 459903107664. Its totient is φ = 98248488000.

The previous prime is 245647978237. The next prime is 245647978273. The reversal of 245647978250 is 52879746542.

It can be written as a sum of positive squares in 8 ways, for example, as 1357996201 + 244289982049 = 36851^2 + 494257^2 .

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 245647978250.

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, 2486804 + ... + 2583696.

Almost surely, 2^245647978250 is an apocalyptic number.

245647978250 is a deficient number, since it is larger than the sum of its proper divisors (214255129414).

245647978250 is a wasteful number, since it uses less digits than its factorization.

245647978250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107051 (or 107041 counting only the distinct ones).

The product of its (nonzero) digits is 33868800, while the sum is 59.

The spelling of 245647978250 in words is "two hundred forty-five billion, six hundred forty-seven million, nine hundred seventy-eight thousand, two hundred fifty".