25524898641 has 12 divisors (see below), whose sum is σ = 40221052560. Its totient is φ = 15469635480.

The previous prime is 25524898639. The next prime is 25524898649. The reversal of 25524898641 is 14689842552.

25524898641 is a `hidden beast` number, since 2 + 552 + 4 + 8 + 9 + 86 + 4 + 1 = 666.

It is not a de Polignac number, because 25524898641 - 2¹ = 25524898639 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25524898649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 128913531 + ... + 128913728.

It is an arithmetic number, because the mean of its divisors is an integer number (3351754380).

Almost surely, 2^25524898641 is an apocalyptic number.

It is an amenable number.

25524898641 is a deficient number, since it is larger than the sum of its proper divisors (14696153919).

25524898641 is a wasteful number, since it uses less digits than its factorization.

25524898641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257827276 (or 257827273 counting only the distinct ones).

The product of its digits is 5529600, while the sum is 54.

The spelling of 25524898641 in words is "twenty-five billion, five hundred twenty-four million, eight hundred ninety-eight thousand, six hundred forty-one".