125662776407 has 16 divisors (see below), whose sum is σ = 146973066240. Its totient is φ = 105192736992.

The previous prime is 125662776401. The next prime is 125662776433. The reversal of 125662776407 is 704677266521.

It is not a de Polignac number, because 125662776407 - 2²² = 125658582103 is a prime.

It is a super-2 number, since 2×125662776407² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125662776401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2891813 + ... + 2934945.

It is an arithmetic number, because the mean of its divisors is an integer number (9185816640).

Almost surely, 2^125662776407 is an apocalyptic number.

125662776407 is a deficient number, since it is larger than the sum of its proper divisors (21310289833).

125662776407 is an equidigital number, since it uses as much as digits as its factorization.

125662776407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52862.

The product of its (nonzero) digits is 5927040, while the sum is 53.

The spelling of 125662776407 in words is "one hundred twenty-five billion, six hundred sixty-two million, seven hundred seventy-six thousand, four hundred seven".