625540025 has 12 divisors (see below), whose sum is σ = 846185424. Its totient is φ = 454938000.

The previous prime is 625539989. The next prime is 625540031. The reversal of 625540025 is 520045526.

It is not a de Polignac number, because 625540025 - 2⁶ = 625539961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 625540025.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 1137071 + ... + 1137620.

It is an arithmetic number, because the mean of its divisors is an integer number (70515452).

Almost surely, 2^625540025 is an apocalyptic number.

It is an amenable number.

625540025 is a deficient number, since it is larger than the sum of its proper divisors (220645399).

625540025 is a wasteful number, since it uses less digits than its factorization.

625540025 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2274712 (or 2274707 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 625540025 is about 25010.7981679914. The cubic root of 625540025 is about 855.2341503858.

The spelling of 625540025 in words is "six hundred twenty-five million, five hundred forty thousand, twenty-five".