625455253 has 4 divisors (see below), whose sum is σ = 640000768. Its totient is φ = 610909740.

The previous prime is 625455241. The next prime is 625455269. The reversal of 625455253 is 352554526.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 625455253 - 2⁵ = 625455221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625455223) 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, 7272693 + ... + 7272778.

It is an arithmetic number, because the mean of its divisors is an integer number (160000192).

Almost surely, 2^625455253 is an apocalyptic number.

It is an amenable number.

625455253 is a deficient number, since it is larger than the sum of its proper divisors (14545515).

625455253 is a wasteful number, since it uses less digits than its factorization.

625455253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14545514.

The product of its digits is 180000, while the sum is 37.

The square root of 625455253 is about 25009.1034025612. The cubic root of 625455253 is about 855.1955154029.

The spelling of 625455253 in words is "six hundred twenty-five million, four hundred fifty-five thousand, two hundred fifty-three".