125404131501 has 48 divisors (see below), whose sum is σ = 204276338560. Its totient is φ = 75977352000.

The previous prime is 125404131499. The next prime is 125404131509. The reversal of 125404131501 is 105131404521.

125404131501 is a `hidden beast` number, since 1 + 2 + 540 + 41 + 31 + 50 + 1 = 666.

It is not a de Polignac number, because 125404131501 - 2¹ = 125404131499 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125404131509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16171041 + ... + 16178793.

Almost surely, 2^125404131501 is an apocalyptic number.

125404131501 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

125404131501 is a deficient number, since it is larger than the sum of its proper divisors (78872207059).

125404131501 is a wasteful number, since it uses less digits than its factorization.

125404131501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12735 (or 12718 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The spelling of 125404131501 in words is "one hundred twenty-five billion, four hundred four million, one hundred thirty-one thousand, five hundred one".