125214302561 has 4 divisors (see below), whose sum is σ = 125215032852. Its totient is φ = 125213572272.

The previous prime is 125214302557. The next prime is 125214302579. The reversal of 125214302561 is 165203412521.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 99061267600 + 26153034961 = 314740^2 + 161719^2 .

It is a cyclic number.

It is not a de Polignac number, because 125214302561 - 2² = 125214302557 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125214302761) 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, 47435 + ... + 502671.

It is an arithmetic number, because the mean of its divisors is an integer number (31303758213).

Almost surely, 2^125214302561 is an apocalyptic number.

It is an amenable number.

125214302561 is a deficient number, since it is larger than the sum of its proper divisors (730291).

125214302561 is an equidigital number, since it uses as much as digits as its factorization.

125214302561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730290.

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 125214302561 in words is "one hundred twenty-five billion, two hundred fourteen million, three hundred two thousand, five hundred sixty-one".