125400854172 has 24 divisors (see below), whose sum is σ = 319202174592. Its totient is φ = 38000258800.

The previous prime is 125400854147. The next prime is 125400854191. The reversal of 125400854172 is 271458004521.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 125400854172.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 475003104 + ... + 475003367.

It is an arithmetic number, because the mean of its divisors is an integer number (13300090608).

Almost surely, 2^125400854172 is an apocalyptic number.

125400854172 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

125400854172 is an abundant number, since it is smaller than the sum of its proper divisors (193801320420).

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

125400854172 is a wasteful number, since it uses less digits than its factorization.

125400854172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 950006489 (or 950006487 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 39.

Adding to 125400854172 its reverse (271458004521), we get a palindrome (396858858693).

The spelling of 125400854172 in words is "one hundred twenty-five billion, four hundred million, eight hundred fifty-four thousand, one hundred seventy-two".