125489431 has 2 divisors, whose sum is σ = 125489432. Its totient is φ = 125489430.

The previous prime is 125489387. The next prime is 125489453. The reversal of 125489431 is 134984521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125489431 - 2⁷ = 125489303 is a prime.

It is a super-2 number, since 2×125489431² = 31495194585407522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125489491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62744715 + 62744716.

It is an arithmetic number, because the mean of its divisors is an integer number (62744716).

Almost surely, 2^125489431 is an apocalyptic number.

125489431 is a deficient number, since it is larger than the sum of its proper divisors (1).

125489431 is an equidigital number, since it uses as much as digits as its factorization.

125489431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 37.

The square root of 125489431 is about 11202.2065237167. The cubic root of 125489431 is about 500.6517248071.

The spelling of 125489431 in words is "one hundred twenty-five million, four hundred eighty-nine thousand, four hundred thirty-one".