125109898 has 4 divisors (see below), whose sum is σ = 187664850. Its totient is φ = 62554948.

The previous prime is 125109823. The next prime is 125109899. The reversal of 125109898 is 898901521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 72880369 + 52229529 = 8537^2 + 7227^2 .

It is not an unprimeable number, because it can be changed into a prime (125109899) by changing a digit.

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 as a sum of consecutive naturals, namely, 31277473 + ... + 31277476.

Almost surely, 2^125109898 is an apocalyptic number.

125109898 is a deficient number, since it is larger than the sum of its proper divisors (62554952).

125109898 is an equidigital number, since it uses as much as digits as its factorization.

125109898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62554951.

The product of its (nonzero) digits is 51840, while the sum is 43.

The square root of 125109898 is about 11185.2535956946. The cubic root of 125109898 is about 500.1464877452.

The spelling of 125109898 in words is "one hundred twenty-five million, one hundred nine thousand, eight hundred ninety-eight".