25049129553 has 160 divisors (see below), whose sum is σ = 46500056064. Its totient is φ = 13114441728.

The previous prime is 25049129549. The next prime is 25049129557. The reversal of 25049129553 is 35592194052.

25049129553 is a `hidden beast` number, since 2 + 5 + 0 + 4 + 91 + 2 + 9 + 553 = 666.

It is an interprime number because it is at equal distance from previous prime (25049129549) and next prime (25049129557).

It is not a de Polignac number, because 25049129553 - 2² = 25049129549 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 25049129499 and 25049129508.

It is not an unprimeable number, because it can be changed into a prime (25049129557) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 68253576 + ... + 68253942.

Almost surely, 2^25049129553 is an apocalyptic number.

It is an amenable number.

25049129553 is a deficient number, since it is larger than the sum of its proper divisors (21450926511).

25049129553 is a wasteful number, since it uses less digits than its factorization.

25049129553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 486000, while the sum is 45.

The spelling of 25049129553 in words is "twenty-five billion, forty-nine million, one hundred twenty-nine thousand, five hundred fifty-three".