125581492 has 12 divisors (see below), whose sum is σ = 222237540. Its totient is φ = 62085056.

The previous prime is 125581453. The next prime is 125581501. The reversal of 125581492 is 294185521.

It can be written as a sum of positive squares in 2 ways, for example, as 24860196 + 100721296 = 4986^2 + 10036^2 .

It is a super-2 number, since 2×125581492² = 31541422265892128, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176023 + ... + 176734.

It is an arithmetic number, because the mean of its divisors is an integer number (18519795).

Almost surely, 2^125581492 is an apocalyptic number.

It is an amenable number.

125581492 is a deficient number, since it is larger than the sum of its proper divisors (96656048).

125581492 is a wasteful number, since it uses less digits than its factorization.

125581492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352850 (or 352848 counting only the distinct ones).

The product of its digits is 28800, while the sum is 37.

The square root of 125581492 is about 11206.3148269179. The cubic root of 125581492 is about 500.7741235137.

The spelling of 125581492 in words is "one hundred twenty-five million, five hundred eighty-one thousand, four hundred ninety-two".