251530245002 has 16 divisors (see below), whose sum is σ = 378723269760. Its totient is φ = 125289313488.

The previous prime is 251530244863. The next prime is 251530245019. The reversal of 251530245002 is 200542035152.

It is a super-2 number, since 2×251530245002² (a number of 24 digits) contains 22 as substring.

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, 3424499 + ... + 3497177.

It is an arithmetic number, because the mean of its divisors is an integer number (23670204360).

Almost surely, 2^251530245002 is an apocalyptic number.

251530245002 is a deficient number, since it is larger than the sum of its proper divisors (127193024758).

251530245002 is a wasteful number, since it uses less digits than its factorization.

251530245002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79205.

The product of its (nonzero) digits is 12000, while the sum is 29.

The spelling of 251530245002 in words is "two hundred fifty-one billion, five hundred thirty million, two hundred forty-five thousand, two".