125633997 has 10 divisors (see below), whose sum is σ = 187675598. Its totient is φ = 83755944.

The previous prime is 125633987. The next prime is 125633999. The reversal of 125633997 is 799336521.

125633997 is a `hidden beast` number, since 1 + 2 + 5 + 633 + 9 + 9 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 121749156 + 3884841 = 11034^2 + 1971^2 .

It is not a de Polignac number, because 125633997 - 2⁷ = 125633869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125633999) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 775438 + ... + 775599.

Almost surely, 2^125633997 is an apocalyptic number.

It is an amenable number.

125633997 is a deficient number, since it is larger than the sum of its proper divisors (62041601).

125633997 is an equidigital number, since it uses as much as digits as its factorization.

125633997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1551049 (or 1551040 counting only the distinct ones).

The product of its digits is 306180, while the sum is 45.

The square root of 125633997 is about 11208.6572344773. The cubic root of 125633997 is about 500.8439041834.

It can be divided in two parts, 1256 and 33997, that added together give a palindrome (35253).

The spelling of 125633997 in words is "one hundred twenty-five million, six hundred thirty-three thousand, nine hundred ninety-seven".