25297783930 has 16 divisors (see below), whose sum is σ = 46766714760. Its totient is φ = 9845623872.

The previous prime is 25297783897. The next prime is 25297783937. The reversal of 25297783930 is 3938779252.

It can be written as a sum of positive squares in 4 ways, for example, as 25175216889 + 122567041 = 158667^2 + 11071^2 .

It is not an unprimeable number, because it can be changed into a prime (25297783937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34185825 + ... + 34186564.

Almost surely, 2^25297783930 is an apocalyptic number.

25297783930 is a deficient number, since it is larger than the sum of its proper divisors (21468930830).

25297783930 is a wasteful number, since it uses less digits than its factorization.

25297783930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68372433.

The product of its (nonzero) digits is 5715360, while the sum is 55.

The spelling of 25297783930 in words is "twenty-five billion, two hundred ninety-seven million, seven hundred eighty-three thousand, nine hundred thirty".