25553002487 has 2 divisors, whose sum is σ = 25553002488. Its totient is φ = 25553002486.

The previous prime is 25553002471. The next prime is 25553002513. The reversal of 25553002487 is 78420035552.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 25553002487 - 2⁴ = 25553002471 is a prime.

It is a super-2 number, since 2×25553002487² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25553002427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12776501243 + 12776501244.

It is an arithmetic number, because the mean of its divisors is an integer number (12776501244).

Almost surely, 2^25553002487 is an apocalyptic number.

25553002487 is a deficient number, since it is larger than the sum of its proper divisors (1).

25553002487 is an equidigital number, since it uses as much as digits as its factorization.

25553002487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 336000, while the sum is 41.

The spelling of 25553002487 in words is "twenty-five billion, five hundred fifty-three million, two thousand, four hundred eighty-seven".