125498723903 has 18 divisors (see below), whose sum is σ = 148794942744. Its totient is φ = 105540590064.

The previous prime is 125498723897. The next prime is 125498723951. The reversal of 125498723903 is 309327894521.

It is not a de Polignac number, because 125498723903 - 2²² = 125494529599 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125498723953) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 318251 + ... + 593532.

It is an arithmetic number, because the mean of its divisors is an integer number (8266385708).

Almost surely, 2^125498723903 is an apocalyptic number.

125498723903 is a deficient number, since it is larger than the sum of its proper divisors (23296218841).

125498723903 is an frugal number, since it uses more digits than its factorization.

125498723903 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911903 (or 911843 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 125498723903 in words is "one hundred twenty-five billion, four hundred ninety-eight million, seven hundred twenty-three thousand, nine hundred three".