315135025251 has 8 divisors (see below), whose sum is σ = 438448730880. Its totient is φ = 200955668232.

The previous prime is 315135025243. The next prime is 315135025267. The reversal of 315135025251 is 152520531513.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 315135025251 - 2³ = 315135025243 is a prime.

It is a super-2 number, since 2×315135025251² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (315135025241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2283587071 + ... + 2283587208.

It is an arithmetic number, because the mean of its divisors is an integer number (54806091360).

Almost surely, 2^315135025251 is an apocalyptic number.

315135025251 is a deficient number, since it is larger than the sum of its proper divisors (123313705629).

315135025251 is a wasteful number, since it uses less digits than its factorization.

315135025251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4567174305.

The product of its (nonzero) digits is 22500, while the sum is 33.

Adding to 315135025251 its reverse (152520531513), we get a palindrome (467655556764).

The spelling of 315135025251 in words is "three hundred fifteen billion, one hundred thirty-five million, twenty-five thousand, two hundred fifty-one".