5640779925 has 48 divisors (see below), whose sum is σ = 11304365760. Its totient is φ = 2734920000.

The previous prime is 5640779917. The next prime is 5640779939. The reversal of 5640779925 is 5299770465.

5640779925 is a `hidden beast` number, since 564 + 0 + 7 + 79 + 9 + 2 + 5 = 666.

It is not a de Polignac number, because 5640779925 - 2³ = 5640779917 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 372426 + ... + 387275.

It is an arithmetic number, because the mean of its divisors is an integer number (235507620).

Almost surely, 2^5640779925 is an apocalyptic number.

5640779925 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5640779925 is an abundant number, since it is smaller than the sum of its proper divisors (5663585835).

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

5640779925 is a wasteful number, since it uses less digits than its factorization.

5640779925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759731 (or 759720 counting only the distinct ones).

The product of its (nonzero) digits is 4762800, while the sum is 54.

The square root of 5640779925 is about 75105.1258237412. The cubic root of 5640779925 is about 1780.1081368677.

The spelling of 5640779925 in words is "five billion, six hundred forty million, seven hundred seventy-nine thousand, nine hundred twenty-five".