1253120425 has 12 divisors (see below), whose sum is σ = 1555868176. Its totient is φ = 1001206800.

The previous prime is 1253120419. The next prime is 1253120437. The reversal of 1253120425 is 5240213521.

It is a de Polignac number, because none of the positive numbers 2^k-1253120425 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 1253120425.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12171 + ... + 51520.

Almost surely, 2^1253120425 is an apocalyptic number.

It is an amenable number.

1253120425 is a deficient number, since it is larger than the sum of its proper divisors (302747751).

1253120425 is an equidigital number, since it uses as much as digits as its factorization.

1253120425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64488 (or 64483 counting only the distinct ones).

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

The square root of 1253120425 is about 35399.4410266603. The cubic root of 1253120425 is about 1078.1129670855.

Adding to 1253120425 its reverse (5240213521), we get a palindrome (6493333946).

The spelling of 1253120425 in words is "one billion, two hundred fifty-three million, one hundred twenty thousand, four hundred twenty-five".