125412557 has 2 divisors, whose sum is σ = 125412558. Its totient is φ = 125412556.

The previous prime is 125412541. The next prime is 125412569. The reversal of 125412557 is 755214521.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117267241 + 8145316 = 10829^2 + 2854^2 .

It is a cyclic number.

It is not a de Polignac number, because 125412557 - 2⁴ = 125412541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125432557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62706278 + 62706279.

It is an arithmetic number, because the mean of its divisors is an integer number (62706279).

Almost surely, 2^125412557 is an apocalyptic number.

It is an amenable number.

125412557 is a deficient number, since it is larger than the sum of its proper divisors (1).

125412557 is an equidigital number, since it uses as much as digits as its factorization.

125412557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14000, while the sum is 32.

The square root of 125412557 is about 11198.7747990573. The cubic root of 125412557 is about 500.5494719400.

The spelling of 125412557 in words is "one hundred twenty-five million, four hundred twelve thousand, five hundred fifty-seven".