125899254 has 36 divisors (see below), whose sum is σ = 295386156. Its totient is φ = 38737296.

The previous prime is 125899243. The next prime is 125899273. The reversal of 125899254 is 452998521.

125899254 = 3106² + 3107² + ... + 3118².

It is a happy number.

125899254 is a `hidden beast` number, since 12 + 589 + 9 + 2 + 54 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 17652 + ... + 23735.

It is an arithmetic number, because the mean of its divisors is an integer number (8205171).

Almost surely, 2^125899254 is an apocalyptic number.

125899254 is an abundant number, since it is smaller than the sum of its proper divisors (169486902).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

125899254 is a wasteful number, since it uses less digits than its factorization.

125899254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41421 (or 41405 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 125899254 is about 11220.4836794142. The cubic root of 125899254 is about 501.1961415423.

The spelling of 125899254 in words is "one hundred twenty-five million, eight hundred ninety-nine thousand, two hundred fifty-four".