125019645892 has 12 divisors (see below), whose sum is σ = 218819025936. Its totient is φ = 62499924200.

The previous prime is 125019645833. The next prime is 125019645911. The reversal of 125019645892 is 298546910521.

It is a happy number.

It is a super-2 number, since 2×125019645892² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2446234 + ... + 2496817.

It is an arithmetic number, because the mean of its divisors is an integer number (18234918828).

Almost surely, 2^125019645892 is an apocalyptic number.

It is an amenable number.

125019645892 is a deficient number, since it is larger than the sum of its proper divisors (93799380044).

125019645892 is a wasteful number, since it uses less digits than its factorization.

125019645892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4949378 (or 4949376 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 52.

The spelling of 125019645892 in words is "one hundred twenty-five billion, nineteen million, six hundred forty-five thousand, eight hundred ninety-two".