251525253 has 16 divisors (see below), whose sum is σ = 383504000. Its totient is φ = 143643456.

The previous prime is 251525243. The next prime is 251525257. The reversal of 251525253 is 352525152.

It is not a de Polignac number, because 251525253 - 2⁴ = 251525237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 251525253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251525257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55551 + ... + 59907.

It is an arithmetic number, because the mean of its divisors is an integer number (23969000).

Almost surely, 2^251525253 is an apocalyptic number.

It is an amenable number.

251525253 is a deficient number, since it is larger than the sum of its proper divisors (131978747).

251525253 is a wasteful number, since it uses less digits than its factorization.

251525253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7116.

The product of its digits is 15000, while the sum is 30.

The square root of 251525253 is about 15859.5476921632. The cubic root of 251525253 is about 631.2390605822.

The spelling of 251525253 in words is "two hundred fifty-one million, five hundred twenty-five thousand, two hundred fifty-three".