25484023257 has 32 divisors (see below), whose sum is σ = 42943395840. Its totient is φ = 13057096320.

The previous prime is 25484023249. The next prime is 25484023259. The reversal of 25484023257 is 75232048452.

It is not a de Polignac number, because 25484023257 - 2³ = 25484023249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (25484023259) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 738757 + ... + 772482.

It is an arithmetic number, because the mean of its divisors is an integer number (1341981120).

Almost surely, 2^25484023257 is an apocalyptic number.

It is an amenable number.

25484023257 is a deficient number, since it is larger than the sum of its proper divisors (17459372583).

25484023257 is a wasteful number, since it uses less digits than its factorization.

25484023257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511333.

The product of its (nonzero) digits is 537600, while the sum is 42.

The spelling of 25484023257 in words is "twenty-five billion, four hundred eighty-four million, twenty-three thousand, two hundred fifty-seven".