125697725 has 6 divisors (see below), whose sum is σ = 155865210. Its totient is φ = 100558160.

The previous prime is 125697721. The next prime is 125697757. The reversal of 125697725 is 527796521.

It can be written as a sum of positive squares in 3 ways, for example, as 30946969 + 94750756 = 5563^2 + 9734^2 .

It is not a de Polignac number, because 125697725 - 2² = 125697721 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125697721) 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, 2513930 + ... + 2513979.

It is an arithmetic number, because the mean of its divisors is an integer number (25977535).

Almost surely, 2^125697725 is an apocalyptic number.

It is an amenable number.

125697725 is a deficient number, since it is larger than the sum of its proper divisors (30167485).

125697725 is an equidigital number, since it uses as much as digits as its factorization.

125697725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5027919 (or 5027914 counting only the distinct ones).

The product of its digits is 264600, while the sum is 44.

The square root of 125697725 is about 11211.4996766713. The cubic root of 125697725 is about 500.9285744315.

The spelling of 125697725 in words is "one hundred twenty-five million, six hundred ninety-seven thousand, seven hundred twenty-five".