125015545212 has 12 divisors (see below), whose sum is σ = 291702938856. Its totient is φ = 41671848400.

The previous prime is 125015545211. The next prime is 125015545219. The reversal of 125015545212 is 212545510521.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×125015545212² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125015545211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5208981039 + ... + 5208981062.

It is an arithmetic number, because the mean of its divisors is an integer number (24308578238).

Almost surely, 2^125015545212 is an apocalyptic number.

125015545212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

125015545212 is an abundant number, since it is smaller than the sum of its proper divisors (166687393644).

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

125015545212 is a wasteful number, since it uses less digits than its factorization.

125015545212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10417962108 (or 10417962106 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 33.

The spelling of 125015545212 in words is "one hundred twenty-five billion, fifteen million, five hundred forty-five thousand, two hundred twelve".