125553431 has 2 divisors, whose sum is σ = 125553432. Its totient is φ = 125553430.

The previous prime is 125553409. The next prime is 125553437. The reversal of 125553431 is 134355521.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 125553431 - 2¹⁰ = 125552407 is a prime.

It is a super-2 number, since 2×125553431² = 31527328071743522, 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 = 125553394 and 125553403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (125553437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 62776715 + 62776716.

It is an arithmetic number, because the mean of its divisors is an integer number (62776716).

Almost surely, 2^125553431 is an apocalyptic number.

125553431 is a deficient number, since it is larger than the sum of its proper divisors (1).

125553431 is an equidigital number, since it uses as much as digits as its factorization.

125553431 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9000, while the sum is 29.

The square root of 125553431 is about 11205.0627396726. The cubic root of 125553431 is about 500.7368216543.

The spelling of 125553431 in words is "one hundred twenty-five million, five hundred fifty-three thousand, four hundred thirty-one".