125321615 has 12 divisors (see below), whose sum is σ = 155755704. Its totient is φ = 96796896.

The previous prime is 125321611. The next prime is 125321629. The reversal of 125321615 is 516123521.

It is not a de Polignac number, because 125321615 - 2² = 125321611 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 (125321611) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10697 + ... + 19106.

It is an arithmetic number, because the mean of its divisors is an integer number (12979642).

Almost surely, 2^125321615 is an apocalyptic number.

125321615 is a deficient number, since it is larger than the sum of its proper divisors (30434089).

125321615 is an equidigital number, since it uses as much as digits as its factorization.

125321615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29866 (or 29837 counting only the distinct ones).

The product of its digits is 1800, while the sum is 26.

The square root of 125321615 is about 11194.7137078176. The cubic root of 125321615 is about 500.4284527516.

The spelling of 125321615 in words is "one hundred twenty-five million, three hundred twenty-one thousand, six hundred fifteen".