621225312025 has 12 divisors (see below), whose sum is σ = 803811534912. Its totient is φ = 475372412240.

The previous prime is 621225312017. The next prime is 621225312031. The reversal of 621225312025 is 520213522126.

It is not a de Polignac number, because 621225312025 - 2³ = 621225312017 is a prime.

It is a Duffinian number.

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, 540195349 + ... + 540196498.

It is an arithmetic number, because the mean of its divisors is an integer number (66984294576).

Almost surely, 2^621225312025 is an apocalyptic number.

It is an amenable number.

621225312025 is a deficient number, since it is larger than the sum of its proper divisors (182586222887).

621225312025 is a wasteful number, since it uses less digits than its factorization.

621225312025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080391880 (or 1080391875 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 31.

The spelling of 621225312025 in words is "six hundred twenty-one billion, two hundred twenty-five million, three hundred twelve thousand, twenty-five".