2625345621 has 32 divisors (see below), whose sum is σ = 3986812800. Its totient is φ = 1706918400.

The previous prime is 2625345601. The next prime is 2625345677. The reversal of 2625345621 is 1265435262.

2625345621 is a `hidden beast` number, since 2 + 6 + 25 + 3 + 4 + 5 + 621 = 666.

It is not a de Polignac number, because 2625345621 - 2⁵ = 2625345589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2625345601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 175525 + ... + 189893.

It is an arithmetic number, because the mean of its divisors is an integer number (124587900).

Almost surely, 2^2625345621 is an apocalyptic number.

It is an amenable number.

2625345621 is a deficient number, since it is larger than the sum of its proper divisors (1361467179).

2625345621 is a wasteful number, since it uses less digits than its factorization.

2625345621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14546 (or 14540 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 2625345621 is about 51238.1266343726. The cubic root of 2625345621 is about 1379.5226278913.

The spelling of 2625345621 in words is "two billion, six hundred twenty-five million, three hundred forty-five thousand, six hundred twenty-one".