125615461 has 4 divisors (see below), whose sum is σ = 126386272. Its totient is φ = 124844652.

The previous prime is 125615449. The next prime is 125615471. The reversal of 125615461 is 164516521.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 164516521 = 13 ⋅12655117.

It is a cyclic number.

It is not a de Polignac number, because 125615461 - 2⁵ = 125615429 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 (125615471) 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, 385161 + ... + 385486.

It is an arithmetic number, because the mean of its divisors is an integer number (31596568).

Almost surely, 2^125615461 is an apocalyptic number.

It is an amenable number.

125615461 is a deficient number, since it is larger than the sum of its proper divisors (770811).

125615461 is an equidigital number, since it uses as much as digits as its factorization.

125615461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770810.

The product of its digits is 7200, while the sum is 31.

The square root of 125615461 is about 11207.8303431128. The cubic root of 125615461 is about 500.8192715218.

The spelling of 125615461 in words is "one hundred twenty-five million, six hundred fifteen thousand, four hundred sixty-one".