125645456 has 40 divisors (see below), whose sum is σ = 249359040. Its totient is φ = 61311104.

The previous prime is 125645431. The next prime is 125645489. The reversal of 125645456 is 654546521.

It is a super-2 number, since 2×125645456² = 31573561226895872, which contains 22 as substring.

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, 157250 + ... + 158046.

It is an arithmetic number, because the mean of its divisors is an integer number (6233976).

Almost surely, 2^125645456 is an apocalyptic number.

125645456 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

125645456 is a deficient number, since it is larger than the sum of its proper divisors (123713584).

125645456 is a wasteful number, since it uses less digits than its factorization.

125645456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031 (or 1025 counting only the distinct ones).

The product of its digits is 144000, while the sum is 38.

The square root of 125645456 is about 11209.1683902063. The cubic root of 125645456 is about 500.8591309425.

The spelling of 125645456 in words is "one hundred twenty-five million, six hundred forty-five thousand, four hundred fifty-six".