5215425251 has 4 divisors (see below), whose sum is σ = 5222483400. Its totient is φ = 5208367104.

The previous prime is 5215425209. The next prime is 5215425253. The reversal of 5215425251 is 1525245125.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 5215425251 - 2²⁶ = 5148316387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5215425253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3527966 + ... + 3529443.

It is an arithmetic number, because the mean of its divisors is an integer number (1305620850).

Almost surely, 2^5215425251 is an apocalyptic number.

5215425251 is a deficient number, since it is larger than the sum of its proper divisors (7058149).

5215425251 is an equidigital number, since it uses as much as digits as its factorization.

5215425251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7058148.

The product of its digits is 20000, while the sum is 32.

The square root of 5215425251 is about 72217.9011810784. The cubic root of 5215425251 is about 1734.1895908202.

The spelling of 5215425251 in words is "five billion, two hundred fifteen million, four hundred twenty-five thousand, two hundred fifty-one".