125137637641 has 4 divisors (see below), whose sum is σ = 125171544784. Its totient is φ = 125103730500.

The previous prime is 125137637609. The next prime is 125137637693. The reversal of 125137637641 is 146736731521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 125137637641 - 2⁵ = 125137637609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 125137637591 and 125137637600.

It is not an unprimeable number, because it can be changed into a prime (125137637441) 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, 16948035 + ... + 16955416.

It is an arithmetic number, because the mean of its divisors is an integer number (31292886196).

Almost surely, 2^125137637641 is an apocalyptic number.

It is an amenable number.

125137637641 is a deficient number, since it is larger than the sum of its proper divisors (33907143).

125137637641 is an equidigital number, since it uses as much as digits as its factorization.

125137637641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33907142.

The product of its digits is 635040, while the sum is 46.

The spelling of 125137637641 in words is "one hundred twenty-five billion, one hundred thirty-seven million, six hundred thirty-seven thousand, six hundred forty-one".