125421315156 has 72 divisors (see below), whose sum is σ = 327339038208. Its totient is φ = 40449240000.

The previous prime is 125421315133. The next prime is 125421315193. The reversal of 125421315156 is 651513124521.

125421315156 is a `hidden beast` number, since 1 + 2 + 5 + 4 + 2 + 131 + 515 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 125421315156.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6229506 + ... + 6249606.

Almost surely, 2^125421315156 is an apocalyptic number.

It is an amenable number.

125421315156 is an abundant number, since it is smaller than the sum of its proper divisors (201917723052).

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

125421315156 is a wasteful number, since it uses less digits than its factorization.

125421315156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25733 (or 25728 counting only the distinct ones).

The product of its digits is 36000, while the sum is 36.

Adding to 125421315156 its reverse (651513124521), we get a palindrome (776934439677).

The spelling of 125421315156 in words is "one hundred twenty-five billion, four hundred twenty-one million, three hundred fifteen thousand, one hundred fifty-six".