251355101233252 has 12 divisors (see below), whose sum is σ = 440833946695660. Its totient is φ = 125402545034496.

The previous prime is 251355101233193. The next prime is 251355101233279. The reversal of 251355101233252 is 252332101553152.

It can be written as a sum of positive squares in 2 ways, for example, as 176480969128996 + 74874132104256 = 13284614^2 + 8652984^2 .

It is a super-2 number, since 2×251355101233252² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 68751393477 + ... + 68751397132.

Almost surely, 2^{251355101233252} is an apocalyptic number.

It is an amenable number.

251355101233252 is a deficient number, since it is larger than the sum of its proper divisors (189478845462408).

251355101233252 is a wasteful number, since it uses less digits than its factorization.

251355101233252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137502791070 (or 137502791068 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 40.

The spelling of 251355101233252 in words is "two hundred fifty-one trillion, three hundred fifty-five billion, one hundred one million, two hundred thirty-three thousand, two hundred fifty-two".