125685457 has 4 divisors (see below), whose sum is σ = 125738676. Its totient is φ = 125632240.

The previous prime is 125685421. The next prime is 125685479. The reversal of 125685457 is 754586521.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 41486481 + 84198976 = 6441^2 + 9176^2 .

It is a cyclic number.

It is not a de Polignac number, because 125685457 - 2¹⁵ = 125652689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (125685257) 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, 22894 + ... + 27847.

It is an arithmetic number, because the mean of its divisors is an integer number (31434669).

Almost surely, 2^125685457 is an apocalyptic number.

It is an amenable number.

125685457 is a deficient number, since it is larger than the sum of its proper divisors (53219).

125685457 is an equidigital number, since it uses as much as digits as its factorization.

125685457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53218.

The product of its digits is 336000, while the sum is 43.

The square root of 125685457 is about 11210.9525465056. The cubic root of 125685457 is about 500.9122771551.

The spelling of 125685457 in words is "one hundred twenty-five million, six hundred eighty-five thousand, four hundred fifty-seven".