125604290551 has 4 divisors (see below), whose sum is σ = 125656131312. Its totient is φ = 125552449792.

The previous prime is 125604290549. The next prime is 125604290621. The reversal of 125604290551 is 155092406521.

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 125604290551 - 2¹ = 125604290549 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 (125604291551) 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, 25916746 + ... + 25921591.

It is an arithmetic number, because the mean of its divisors is an integer number (31414032828).

Almost surely, 2^125604290551 is an apocalyptic number.

125604290551 is a deficient number, since it is larger than the sum of its proper divisors (51840761).

125604290551 is an equidigital number, since it uses as much as digits as its factorization.

125604290551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51840760.

The product of its (nonzero) digits is 108000, while the sum is 40.

The spelling of 125604290551 in words is "one hundred twenty-five billion, six hundred four million, two hundred ninety thousand, five hundred fifty-one".