125023381778 has 8 divisors (see below), whose sum is σ = 187761293580. Its totient is φ = 62436283920.

The previous prime is 125023381739. The next prime is 125023381789. The reversal of 125023381778 is 877183320521.

It can be written as a sum of positive squares in 2 ways, for example, as 124839968929 + 183412849 = 353327^2 + 13543^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37701413 + ... + 37704728.

Almost surely, 2^125023381778 is an apocalyptic number.

125023381778 is a deficient number, since it is larger than the sum of its proper divisors (62737911802).

125023381778 is an equidigital number, since it uses as much as digits as its factorization.

125023381778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75406972.

The product of its (nonzero) digits is 564480, while the sum is 47.

The spelling of 125023381778 in words is "one hundred twenty-five billion, twenty-three million, three hundred eighty-one thousand, seven hundred seventy-eight".