125415431 has 2 divisors, whose sum is σ = 125415432. Its totient is φ = 125415430.

The previous prime is 125415379. The next prime is 125415439. The reversal of 125415431 is 134514521.

It is a strong prime.

It is an emirp because it is prime and its reverse (134514521) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 125415431 - 2¹⁴ = 125399047 is a prime.

It is a super-2 number, since 2×125415431² = 31458060665831522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 125415431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125415439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62707715 + 62707716.

It is an arithmetic number, because the mean of its divisors is an integer number (62707716).

Almost surely, 2^125415431 is an apocalyptic number.

125415431 is a deficient number, since it is larger than the sum of its proper divisors (1).

125415431 is an equidigital number, since it uses as much as digits as its factorization.

125415431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2400, while the sum is 26.

The square root of 125415431 is about 11198.9031159306. The cubic root of 125415431 is about 500.5532955023.

Adding to 125415431 its reverse (134514521), we get a palindrome (259929952).

The spelling of 125415431 in words is "one hundred twenty-five million, four hundred fifteen thousand, four hundred thirty-one".