25480857 has 8 divisors (see below), whose sum is σ = 34007040. Its totient is φ = 16970960.

The previous prime is 25480823. The next prime is 25480883. The reversal of 25480857 is 75808452.

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 25480857 - 2¹⁰ = 25479833 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25480657) 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, 232 + ... + 7142.

It is an arithmetic number, because the mean of its divisors is an integer number (4250880).

Almost surely, 2^25480857 is an apocalyptic number.

It is an amenable number.

25480857 is a deficient number, since it is larger than the sum of its proper divisors (8526183).

25480857 is a wasteful number, since it uses less digits than its factorization.

25480857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8143.

The product of its (nonzero) digits is 89600, while the sum is 39.

The square root of 25480857 is about 5047.8566738765. The cubic root of 25480857 is about 294.2645935832.

The spelling of 25480857 in words is "twenty-five million, four hundred eighty thousand, eight hundred fifty-seven".