125401525 has 6 divisors (see below), whose sum is σ = 155497922. Its totient is φ = 100321200.

The previous prime is 125401513. The next prime is 125401559. The reversal of 125401525 is 525104521.

It can be written as a sum of positive squares in 3 ways, for example, as 22033636 + 103367889 = 4694^2 + 10167^2 .

It is not a de Polignac number, because 125401525 - 2⁹ = 125401013 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25), and also a Moran number because the ratio is a prime number: 5016061 = 125401525 / (1 + 2 + 5 + 4 + 0 + 1 + 5 + 2 + 5).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 125401525.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2508006 + ... + 2508055.

Almost surely, 2^125401525 is an apocalyptic number.

It is an amenable number.

125401525 is a deficient number, since it is larger than the sum of its proper divisors (30096397).

125401525 is an equidigital number, since it uses as much as digits as its factorization.

125401525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5016071 (or 5016066 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 125401525 is about 11198.2822343429. The cubic root of 125401525 is about 500.5347944525.

The spelling of 125401525 in words is "one hundred twenty-five million, four hundred one thousand, five hundred twenty-five".