125801945 has 16 divisors (see below), whose sum is σ = 160704000. Its totient is φ = 94267008.

The previous prime is 125801911. The next prime is 125801969. The reversal of 125801945 is 549108521.

It is a cyclic number.

It is not a de Polignac number, because 125801945 - 2¹² = 125797849 is a prime.

It is a super-2 number, since 2×125801945² = 31652258731566050, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1016 + ... + 15894.

It is an arithmetic number, because the mean of its divisors is an integer number (10044000).

Almost surely, 2^125801945 is an apocalyptic number.

It is an amenable number.

125801945 is a deficient number, since it is larger than the sum of its proper divisors (34902055).

125801945 is a wasteful number, since it uses less digits than its factorization.

125801945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14992.

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 125801945 is about 11216.1466199404. The cubic root of 125801945 is about 501.0669814814.

The spelling of 125801945 in words is "one hundred twenty-five million, eight hundred one thousand, nine hundred forty-five".