252859734658 has 4 divisors (see below), whose sum is σ = 379289601990. Its totient is φ = 126429867328.

The previous prime is 252859734619. The next prime is 252859734683. The reversal of 252859734658 is 856437958252.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 224559411129 + 28300323529 = 473877^2 + 168227^2 .

It is a super-2 number, since 2×252859734658² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 252859734658.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63214933663 + ... + 63214933666.

Almost surely, 2^252859734658 is an apocalyptic number.

252859734658 is a deficient number, since it is larger than the sum of its proper divisors (126429867332).

252859734658 is a wasteful number, since it uses less digits than its factorization.

252859734658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126429867331.

The product of its digits is 145152000, while the sum is 64.

The spelling of 252859734658 in words is "two hundred fifty-two billion, eight hundred fifty-nine million, seven hundred thirty-four thousand, six hundred fifty-eight".