125899455 has 16 divisors (see below), whose sum is σ = 219752064. Its totient is φ = 61042080.

The previous prime is 125899441. The next prime is 125899481. The reversal of 125899455 is 554998521.

It is not a de Polignac number, because 125899455 - 2⁸ = 125899199 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 381349 + ... + 381678.

It is an arithmetic number, because the mean of its divisors is an integer number (13734504).

Almost surely, 2^125899455 is an apocalyptic number.

125899455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

125899455 is a deficient number, since it is larger than the sum of its proper divisors (93852609).

125899455 is a wasteful number, since it uses less digits than its factorization.

125899455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763046.

The product of its digits is 648000, while the sum is 48.

The square root of 125899455 is about 11220.4926362437. The cubic root of 125899455 is about 501.1964082645.

The spelling of 125899455 in words is "one hundred twenty-five million, eight hundred ninety-nine thousand, four hundred fifty-five".