25028956645 has 32 divisors (see below), whose sum is σ = 38152477440. Its totient is φ = 15308067840.

The previous prime is 25028956621. The next prime is 25028956649. The reversal of 25028956645 is 54665982052.

It is not a de Polignac number, because 25028956645 - 2⁹ = 25028956133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25028956592 and 25028956601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25028956649) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 592900 + ... + 633709.

It is an arithmetic number, because the mean of its divisors is an integer number (1192264920).

Almost surely, 2^25028956645 is an apocalyptic number.

It is an amenable number.

25028956645 is a deficient number, since it is larger than the sum of its proper divisors (13123520795).

25028956645 is a wasteful number, since it uses less digits than its factorization.

25028956645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226685.

The product of its (nonzero) digits is 5184000, while the sum is 52.

The spelling of 25028956645 in words is "twenty-five billion, twenty-eight million, nine hundred fifty-six thousand, six hundred forty-five".