251265150125 has 64 divisors (see below), whose sum is σ = 344373120000. Its totient is φ = 181521000000.

The previous prime is 251265150119. The next prime is 251265150139. The reversal of 251265150125 is 521051562152.

It is not a de Polignac number, because 251265150125 - 2²⁰ = 251264101549 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 172216646 + ... + 172218104.

It is an arithmetic number, because the mean of its divisors is an integer number (5380830000).

Almost surely, 2^251265150125 is an apocalyptic number.

251265150125 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

251265150125 is a deficient number, since it is larger than the sum of its proper divisors (93107969875).

251265150125 is a wasteful number, since it uses less digits than its factorization.

251265150125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2235 (or 2225 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 35.

The spelling of 251265150125 in words is "two hundred fifty-one billion, two hundred sixty-five million, one hundred fifty thousand, one hundred twenty-five".