125939554 has 16 divisors (see below), whose sum is σ = 207281592. Its totient is φ = 57028608.

The previous prime is 125939551. The next prime is 125939573. The reversal of 125939554 is 455939521.

It can be written as a sum of positive squares in 4 ways, for example, as 77845329 + 48094225 = 8823^2 + 6935^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 125939554.

It is not an unprimeable number, because it can be changed into a prime (125939551) 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, 44319 + ... + 47074.

Almost surely, 2^125939554 is an apocalyptic number.

125939554 is a deficient number, since it is larger than the sum of its proper divisors (81342038).

125939554 is a wasteful number, since it uses less digits than its factorization.

125939554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91461.

The product of its digits is 243000, while the sum is 43.

The square root of 125939554 is about 11222.2793584904. The cubic root of 125939554 is about 501.2496129996.

The spelling of 125939554 in words is "one hundred twenty-five million, nine hundred thirty-nine thousand, five hundred fifty-four".