25769628 has 18 divisors (see below), whose sum is σ = 65139984. Its totient is φ = 8589864.

The previous prime is 25769621. The next prime is 25769629. The reversal of 25769628 is 82696752.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25769621) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 357876 + ... + 357947.

It is an arithmetic number, because the mean of its divisors is an integer number (3618888).

Almost surely, 2^25769628 is an apocalyptic number.

It is an amenable number.

25769628 is an abundant number, since it is smaller than the sum of its proper divisors (39370356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25769628 is a wasteful number, since it uses less digits than its factorization.

25769628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715833 (or 715828 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 25769628 is about 5076.3794184438. The cubic root of 25769628 is about 295.3720404177.

The spelling of 25769628 in words is "twenty-five million, seven hundred sixty-nine thousand, six hundred twenty-eight".