125764278919 has 8 divisors (see below), whose sum is σ = 128151195120. Its totient is φ = 123377881536.

The previous prime is 125764278911. The next prime is 125764278929. The reversal of 125764278919 is 919872467521.

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

It is a cyclic number.

It is not a de Polignac number, because 125764278919 - 2³ = 125764278911 is a prime.

It is a super-2 number, since 2×125764278919² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125764278911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378412 + ... + 628270.

It is an arithmetic number, because the mean of its divisors is an integer number (16018899390).

Almost surely, 2^125764278919 is an apocalyptic number.

125764278919 is a deficient number, since it is larger than the sum of its proper divisors (2386916201).

125764278919 is an equidigital number, since it uses as much as digits as its factorization.

125764278919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259409.

The product of its digits is 15240960, while the sum is 61.

The spelling of 125764278919 in words is "one hundred twenty-five billion, seven hundred sixty-four million, two hundred seventy-eight thousand, nine hundred nineteen".