1253025431 has 4 divisors (see below), whose sum is σ = 1432029072. Its totient is φ = 1074021792.

The previous prime is 1253025413. The next prime is 1253025451. The reversal of 1253025431 is 1345203521.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1345203521 = 1907 ⋅705403.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1253025431 is a prime.

It is a super-2 number, since 2×1253025431² = 3140145461465471522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1253025431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1253025401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89501810 + ... + 89501823.

It is an arithmetic number, because the mean of its divisors is an integer number (358007268).

Almost surely, 2^1253025431 is an apocalyptic number.

1253025431 is a deficient number, since it is larger than the sum of its proper divisors (179003641).

1253025431 is an equidigital number, since it uses as much as digits as its factorization.

1253025431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179003640.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 1253025431 is about 35398.0992568810. The cubic root of 1253025431 is about 1078.0857239333.

Adding to 1253025431 its reverse (1345203521), we get a palindrome (2598228952).

The spelling of 1253025431 in words is "one billion, two hundred fifty-three million, twenty-five thousand, four hundred thirty-one".