25480959721 has 8 divisors (see below), whose sum is σ = 29214137984. Its totient is φ = 21771041760.

The previous prime is 25480959709. The next prime is 25480959767. The reversal of 25480959721 is 12795908452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25480959721 - 2⁵ = 25480959689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25480959701) 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, 5812725 + ... + 5817106.

It is an arithmetic number, because the mean of its divisors is an integer number (3651767248).

Almost surely, 2^25480959721 is an apocalyptic number.

It is an amenable number.

25480959721 is a deficient number, since it is larger than the sum of its proper divisors (3733178263).

25480959721 is a wasteful number, since it uses less digits than its factorization.

25480959721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11630151.

The product of its (nonzero) digits is 1814400, while the sum is 52.

The spelling of 25480959721 in words is "twenty-five billion, four hundred eighty million, nine hundred fifty-nine thousand, seven hundred twenty-one".