125087685407 has 4 divisors (see below), whose sum is σ = 125402768136. Its totient is φ = 124772602680.

The previous prime is 125087685389. The next prime is 125087685433. The reversal of 125087685407 is 704586780521.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 125087685407 - 2¹² = 125087681311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125087685487) 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, 157540769 + ... + 157541562.

It is an arithmetic number, because the mean of its divisors is an integer number (31350692034).

Almost surely, 2^125087685407 is an apocalyptic number.

125087685407 is a deficient number, since it is larger than the sum of its proper divisors (315082729).

125087685407 is an equidigital number, since it uses as much as digits as its factorization.

125087685407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315082728.

The product of its (nonzero) digits is 3763200, while the sum is 53.

The spelling of 125087685407 in words is "one hundred twenty-five billion, eighty-seven million, six hundred eighty-five thousand, four hundred seven".