125225431 has 2 divisors, whose sum is σ = 125225432. Its totient is φ = 125225430.

The previous prime is 125225407. The next prime is 125225453. The reversal of 125225431 is 134522521.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-125225431 is a prime.

It is a super-2 number, since 2×125225431² = 31362817138271522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 125225396 and 125225405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125225831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62612715 + 62612716.

It is an arithmetic number, because the mean of its divisors is an integer number (62612716).

Almost surely, 2^125225431 is an apocalyptic number.

125225431 is a deficient number, since it is larger than the sum of its proper divisors (1).

125225431 is an equidigital number, since it uses as much as digits as its factorization.

125225431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2400, while the sum is 25.

The square root of 125225431 is about 11190.4169269961. The cubic root of 125225431 is about 500.3003941572.

Adding to 125225431 its reverse (134522521), we get a palindrome (259747952).

The spelling of 125225431 in words is "one hundred twenty-five million, two hundred twenty-five thousand, four hundred thirty-one".