15250138775 has 24 divisors (see below), whose sum is σ = 19297233648. Its totient is φ = 11952000000.

The previous prime is 15250138613. The next prime is 15250138793. The reversal of 15250138775 is 57783105251.

It is not a de Polignac number, because 15250138775 - 2¹⁶ = 15250073239 is a prime.

It is a Duffinian number.

15250138775 is a modest number, since divided by 138775 gives 15250 as remainder.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 362855 + ... + 402695.

It is an arithmetic number, because the mean of its divisors is an integer number (804051402).

Almost surely, 2^15250138775 is an apocalyptic number.

15250138775 is a deficient number, since it is larger than the sum of its proper divisors (4047094873).

15250138775 is a wasteful number, since it uses less digits than its factorization.

15250138775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40163 (or 40158 counting only the distinct ones).

The product of its (nonzero) digits is 294000, while the sum is 44.

The spelling of 15250138775 in words is "fifteen billion, two hundred fifty million, one hundred thirty-eight thousand, seven hundred seventy-five".