621602025 has 192 divisors, whose sum is σ = 1295917056. Its totient is φ = 259072000.

The previous prime is 621601999. The next prime is 621602027. The reversal of 621602025 is 520206126.

It is not a de Polignac number, because 621602025 - 2¹² = 621597929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 621601986 and 621602004.

It is not an unprimeable number, because it can be changed into a prime (621602027) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 13225552 + ... + 13225598.

It is an arithmetic number, because the mean of its divisors is an integer number (6749568).

Almost surely, 2^621602025 is an apocalyptic number.

It is an amenable number.

621602025 is an abundant number, since it is smaller than the sum of its proper divisors (674315031).

621602025 is a wasteful number, since it uses less digits than its factorization.

621602025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 621602025 is about 24931.9478781743. The cubic root of 621602025 is about 853.4357020168.

The spelling of 621602025 in words is "six hundred twenty-one million, six hundred two thousand, twenty-five".