125722415 has 32 divisors (see below), whose sum is σ = 189665280. Its totient is φ = 77871744.

The previous prime is 125722369. The next prime is 125722427. The reversal of 125722415 is 514227521.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 125722415 - 2¹⁰ = 125721391 is a prime.

It is a super-2 number, since 2×125722415² = 31612251266864450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18446 + ... + 24324.

It is an arithmetic number, because the mean of its divisors is an integer number (5927040).

Almost surely, 2^125722415 is an apocalyptic number.

125722415 is a deficient number, since it is larger than the sum of its proper divisors (63942865).

125722415 is a wasteful number, since it uses less digits than its factorization.

125722415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5951.

The product of its digits is 5600, while the sum is 29.

The square root of 125722415 is about 11212.6007241853. The cubic root of 125722415 is about 500.9613703494.

Adding to 125722415 its reverse (514227521), we get a palindrome (639949936).

The spelling of 125722415 in words is "one hundred twenty-five million, seven hundred twenty-two thousand, four hundred fifteen".