25479772730 has 32 divisors (see below), whose sum is σ = 48313272960. Its totient is φ = 9648331200.

The previous prime is 25479772729. The next prime is 25479772753. The reversal of 25479772730 is 3727797452.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 210680 + ... + 308780.

It is an arithmetic number, because the mean of its divisors is an integer number (1509789780).

Almost surely, 2^25479772730 is an apocalyptic number.

25479772730 is a deficient number, since it is larger than the sum of its proper divisors (22833500230).

25479772730 is a wasteful number, since it uses less digits than its factorization.

25479772730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99494.

The product of its (nonzero) digits is 5186160, while the sum is 53.

The spelling of 25479772730 in words is "twenty-five billion, four hundred seventy-nine million, seven hundred seventy-two thousand, seven hundred thirty".