125623017 has 24 divisors (see below), whose sum is σ = 196160328. Its totient is φ = 77011200.

The previous prime is 125623007. The next prime is 125623027. The reversal of 125623017 is 710326521.

It is a happy number.

125623017 is a `hidden beast` number, since 1 + 25 + 623 + 0 + 17 = 666.

It is an interprime number because it is at equal distance from previous prime (125623007) and next prime (125623027).

It can be written as a sum of positive squares in 4 ways, for example, as 30735936 + 94887081 = 5544^2 + 9741^2 .

It is not a de Polignac number, because 125623017 - 2¹¹ = 125620969 is a prime.

It is a super-2 number, since 2×125623017² = 31562284800364578, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (125623007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30967 + ... + 34787.

It is an arithmetic number, because the mean of its divisors is an integer number (8173347).

Almost surely, 2^125623017 is an apocalyptic number.

It is an amenable number.

125623017 is a deficient number, since it is larger than the sum of its proper divisors (70537311).

125623017 is a wasteful number, since it uses less digits than its factorization.

125623017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4121 (or 4118 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 125623017 is about 11208.1674238031. The cubic root of 125623017 is about 500.8293130526.

Adding to 125623017 its reverse (710326521), we get a palindrome (835949538).

The spelling of 125623017 in words is "one hundred twenty-five million, six hundred twenty-three thousand, seventeen".