251225521130 has 8 divisors (see below), whose sum is σ = 452205938052. Its totient is φ = 100490208448.

The previous prime is 251225521121. The next prime is 251225521163. The reversal of 251225521130 is 31125522152.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 248220179089 + 3005342041 = 498217^2 + 54821^2 .

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

It is a super-2 number, since 2×251225521130² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 251225521093 and 251225521102.

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, 12561276047 + ... + 12561276066.

Almost surely, 2^251225521130 is an apocalyptic number.

251225521130 is a deficient number, since it is larger than the sum of its proper divisors (200980416922).

251225521130 is a wasteful number, since it uses less digits than its factorization.

251225521130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25122552120.

The product of its (nonzero) digits is 6000, while the sum is 29.

The spelling of 251225521130 in words is "two hundred fifty-one billion, two hundred twenty-five million, five hundred twenty-one thousand, one hundred thirty".