125953564490 has 16 divisors (see below), whose sum is σ = 244156140648. Its totient is φ = 46505931456.

The previous prime is 125953564463. The next prime is 125953564511. The reversal of 125953564490 is 94465359521.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 91813242049 + 34140322441 = 303007^2 + 184771^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 484436657 + ... + 484436916.

Almost surely, 2^125953564490 is an apocalyptic number.

125953564490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

125953564490 is a deficient number, since it is larger than the sum of its proper divisors (118202576158).

125953564490 is a wasteful number, since it uses less digits than its factorization.

125953564490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968873593.

The product of its (nonzero) digits is 5832000, while the sum is 53.

The spelling of 125953564490 in words is "one hundred twenty-five billion, nine hundred fifty-three million, five hundred sixty-four thousand, four hundred ninety".