251500015150 has 12 divisors (see below), whose sum is σ = 467790028272. Its totient is φ = 100600006040.

The previous prime is 251500015099. The next prime is 251500015171. The reversal of 251500015150 is 51510005152.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2515000102 + ... + 2515000201.

It is an arithmetic number, because the mean of its divisors is an integer number (38982502356).

Almost surely, 2^251500015150 is an apocalyptic number.

251500015150 is a deficient number, since it is larger than the sum of its proper divisors (216290013122).

251500015150 is a wasteful number, since it uses less digits than its factorization.

251500015150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5030000315 (or 5030000310 counting only the distinct ones).

The product of its (nonzero) digits is 1250, while the sum is 25.

The spelling of 251500015150 in words is "two hundred fifty-one billion, five hundred million, fifteen thousand, one hundred fifty".