125078431 has 2 divisors, whose sum is σ = 125078432. Its totient is φ = 125078430.

The previous prime is 125078417. The next prime is 125078453. The reversal of 125078431 is 134870521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 125078431 - 2⁹ = 125077919 is a prime.

It is a super-2 number, since 2×125078431² = 31289227802843522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 125078393 and 125078402.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125078411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62539215 + 62539216.

It is an arithmetic number, because the mean of its divisors is an integer number (62539216).

Almost surely, 2^125078431 is an apocalyptic number.

125078431 is a deficient number, since it is larger than the sum of its proper divisors (1).

125078431 is an equidigital number, since it uses as much as digits as its factorization.

125078431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 125078431 is about 11183.8468784225. The cubic root of 125078431 is about 500.1045528026.

The spelling of 125078431 in words is "one hundred twenty-five million, seventy-eight thousand, four hundred thirty-one".