125015431 has 4 divisors (see below), whose sum is σ = 125037864. Its totient is φ = 124993000.

The previous prime is 125015369. The next prime is 125015447. The reversal of 125015431 is 134510521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 125015431 - 2²³ = 116626823 is a prime.

It is a super-2 number, since 2×125015431² = 31257715976231522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (125015731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4281 + ... + 16381.

It is an arithmetic number, because the mean of its divisors is an integer number (31259466).

Almost surely, 2^125015431 is an apocalyptic number.

125015431 is a deficient number, since it is larger than the sum of its proper divisors (22433).

125015431 is a wasteful number, since it uses less digits than its factorization.

125015431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22432.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 125015431 is about 11181.0299615018. The cubic root of 125015431 is about 500.0205738201.

Adding to 125015431 its reverse (134510521), we get a palindrome (259525952).

The spelling of 125015431 in words is "one hundred twenty-five million, fifteen thousand, four hundred thirty-one".