125413857 has 6 divisors (see below), whose sum is σ = 181153362. Its totient is φ = 83609232.

The previous prime is 125413853. The next prime is 125413861. The reversal of 125413857 is 758314521.

It is an interprime number because it is at equal distance from previous prime (125413853) and next prime (125413861).

It can be written as a sum of positive squares in only one way, i.e., 84658401 + 40755456 = 9201^2 + 6384^2 .

It is not a de Polignac number, because 125413857 - 2² = 125413853 is a prime.

It is not an unprimeable number, because it can be changed into a prime (125413853) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6967428 + ... + 6967445.

It is an arithmetic number, because the mean of its divisors is an integer number (30192227).

Almost surely, 2^125413857 is an apocalyptic number.

It is an amenable number.

125413857 is a deficient number, since it is larger than the sum of its proper divisors (55739505).

125413857 is a wasteful number, since it uses less digits than its factorization.

125413857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13934879 (or 13934876 counting only the distinct ones).

The product of its digits is 33600, while the sum is 36.

The square root of 125413857 is about 11198.8328409705. The cubic root of 125413857 is about 500.5512014639.

The spelling of 125413857 in words is "one hundred twenty-five million, four hundred thirteen thousand, eight hundred fifty-seven".