125815078854 has 12 divisors (see below), whose sum is σ = 272599337556. Its totient is φ = 41938359612.

The previous prime is 125815078811. The next prime is 125815078877. The reversal of 125815078854 is 458870518521.

It is a happy number.

125815078854 is a `hidden beast` number, since 1 + 2 + 5 + 8 + 1 + 507 + 88 + 54 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 125815078854.

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, 3494863284 + ... + 3494863319.

It is an arithmetic number, because the mean of its divisors is an integer number (22716611463).

Almost surely, 2^125815078854 is an apocalyptic number.

125815078854 is an abundant number, since it is smaller than the sum of its proper divisors (146784258702).

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

125815078854 is a wasteful number, since it uses less digits than its factorization.

125815078854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6989726611 (or 6989726608 counting only the distinct ones).

The product of its (nonzero) digits is 3584000, while the sum is 54.

The spelling of 125815078854 in words is "one hundred twenty-five billion, eight hundred fifteen million, seventy-eight thousand, eight hundred fifty-four".