125688934890 has 24 divisors (see below), whose sum is σ = 326791230948. Its totient is φ = 33517049280.

The previous prime is 125688934849. The next prime is 125688934907. The reversal of 125688934890 is 98439886521.

125688934890 is a `hidden beast` number, since 1 + 2 + 5 + 68 + 8 + 93 + 489 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 125573135769 + 115799121 = 354363^2 + 10761^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 698271771 + ... + 698271950.

Almost surely, 2^125688934890 is an apocalyptic number.

125688934890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125688934890 is an abundant number, since it is smaller than the sum of its proper divisors (201102296058).

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

125688934890 is a wasteful number, since it uses less digits than its factorization.

125688934890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396543734 (or 1396543731 counting only the distinct ones).

The product of its (nonzero) digits is 29859840, while the sum is 63.

The spelling of 125688934890 in words is "one hundred twenty-five billion, six hundred eighty-eight million, nine hundred thirty-four thousand, eight hundred ninety".