25287549863 has 8 divisors (see below), whose sum is σ = 26620292400. Its totient is φ = 23954989248.

The previous prime is 25287549853. The next prime is 25287549941. The reversal of 25287549863 is 36894578252.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25287549863 is a prime.

It is a super-2 number, since 2×25287549863² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25287549853) 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, 311945 + ... + 384557.

It is an arithmetic number, because the mean of its divisors is an integer number (3327536550).

Almost surely, 2^25287549863 is an apocalyptic number.

25287549863 is a deficient number, since it is larger than the sum of its proper divisors (1332742537).

25287549863 is a wasteful number, since it uses less digits than its factorization.

25287549863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90961.

The product of its digits is 29030400, while the sum is 59.

The spelling of 25287549863 in words is "twenty-five billion, two hundred eighty-seven million, five hundred forty-nine thousand, eight hundred sixty-three".