125015154550 has 48 divisors (see below), whose sum is σ = 273179984112. Its totient is φ = 41963126400.

The previous prime is 125015154547. The next prime is 125015154623. The reversal of 125015154550 is 55451510521.

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, 8735169 + ... + 8749468.

It is an arithmetic number, because the mean of its divisors is an integer number (5691249669).

Almost surely, 2^125015154550 is an apocalyptic number.

125015154550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125015154550 is an abundant number, since it is smaller than the sum of its proper divisors (148164829562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125015154550 is a wasteful number, since it uses less digits than its factorization.

125015154550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17484673 (or 17484668 counting only the distinct ones).

The product of its (nonzero) digits is 25000, while the sum is 34.

The spelling of 125015154550 in words is "one hundred twenty-five billion, fifteen million, one hundred fifty-four thousand, five hundred fifty".