125137479 has 4 divisors (see below), whose sum is σ = 166849976. Its totient is φ = 83424984.

The previous prime is 125137417. The next prime is 125137489. The reversal of 125137479 is 974731521.

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

It is not a de Polignac number, because 125137479 - 2⁷ = 125137351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125137489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20856244 + ... + 20856249.

It is an arithmetic number, because the mean of its divisors is an integer number (41712494).

Almost surely, 2^125137479 is an apocalyptic number.

125137479 is a deficient number, since it is larger than the sum of its proper divisors (41712497).

125137479 is an equidigital number, since it uses as much as digits as its factorization.

125137479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41712496.

The product of its digits is 52920, while the sum is 39.

The square root of 125137479 is about 11186.4864457076. The cubic root of 125137479 is about 500.1832381727.

The spelling of 125137479 in words is "one hundred twenty-five million, one hundred thirty-seven thousand, four hundred seventy-nine".