257254320630 has 32 divisors (see below), whose sum is σ = 617448557664. Its totient is φ = 68596909056.

The previous prime is 257254320619. The next prime is 257254320667. The reversal of 257254320630 is 36023452752.

It is a congruent number.

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, 243942 + ... + 757638.

It is an arithmetic number, because the mean of its divisors is an integer number (19295267427).

Almost surely, 2^257254320630 is an apocalyptic number.

257254320630 is an abundant number, since it is smaller than the sum of its proper divisors (360194237034).

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

257254320630 is a wasteful number, since it uses less digits than its factorization.

257254320630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530400.

The product of its (nonzero) digits is 302400, while the sum is 39.

The spelling of 257254320630 in words is "two hundred fifty-seven billion, two hundred fifty-four million, three hundred twenty thousand, six hundred thirty".