125661498 has 16 divisors (see below), whose sum is σ = 251911296. Its totient is φ = 41789120.

The previous prime is 125661493. The next prime is 125661517. The reversal of 125661498 is 894166521.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (125661493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21711 + ... + 26882.

It is an arithmetic number, because the mean of its divisors is an integer number (15744456).

Almost surely, 2^125661498 is an apocalyptic number.

125661498 is an abundant number, since it is smaller than the sum of its proper divisors (126249798).

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

125661498 is a wasteful number, since it uses less digits than its factorization.

125661498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49029.

The product of its digits is 103680, while the sum is 42.

The square root of 125661498 is about 11209.8839423073. The cubic root of 125661498 is about 500.8804460528.

The spelling of 125661498 in words is "one hundred twenty-five million, six hundred sixty-one thousand, four hundred ninety-eight".