621122425 has 48 divisors (see below), whose sum is σ = 965116800. Its totient is φ = 385228800.

The previous prime is 621122393. The next prime is 621122459. The reversal of 621122425 is 524221126.

It is not a de Polignac number, because 621122425 - 2⁵ = 621122393 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 621122425.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 440121 + ... + 441529.

It is an arithmetic number, because the mean of its divisors is an integer number (20106600).

Almost surely, 2^621122425 is an apocalyptic number.

It is an amenable number.

621122425 is a deficient number, since it is larger than the sum of its proper divisors (343994375).

621122425 is a wasteful number, since it uses less digits than its factorization.

621122425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1666 (or 1661 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 621122425 is about 24922.3278407134. The cubic root of 621122425 is about 853.2161547507.

The spelling of 621122425 in words is "six hundred twenty-one million, one hundred twenty-two thousand, four hundred twenty-five".