125915329 has 4 divisors (see below), whose sum is σ = 129318484. Its totient is φ = 122512176.

The previous prime is 125915287. The next prime is 125915341. The reversal of 125915329 is 923519521.

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

It can be written as a sum of positive squares in 2 ways, for example, as 50694400 + 75220929 = 7120^2 + 8673^2 .

It is a cyclic number.

It is not a de Polignac number, because 125915329 - 2⁷ = 125915201 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 3403117 = 125915329 / (1 + 2 + 5 + 9 + 1 + 5 + 3 + 2 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125915369) 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, 1701522 + ... + 1701595.

It is an arithmetic number, because the mean of its divisors is an integer number (32329621).

Almost surely, 2^125915329 is an apocalyptic number.

It is an amenable number.

125915329 is a deficient number, since it is larger than the sum of its proper divisors (3403155).

125915329 is an equidigital number, since it uses as much as digits as its factorization.

125915329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3403154.

The product of its digits is 24300, while the sum is 37.

The square root of 125915329 is about 11221.1999803943. The cubic root of 125915329 is about 501.2174717855.

The spelling of 125915329 in words is "one hundred twenty-five million, nine hundred fifteen thousand, three hundred twenty-nine".