25410949641 has 192 divisors, whose sum is σ = 49421352960. Its totient is φ = 12753054720.

The previous prime is 25410949639. The next prime is 25410949667. The reversal of 25410949641 is 14694901452.

25410949641 is a `hidden beast` number, since 2 + 54 + 109 + 496 + 4 + 1 = 666.

It is not a de Polignac number, because 25410949641 - 2¹ = 25410949639 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25410949621) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 66346936 + ... + 66347318.

It is an arithmetic number, because the mean of its divisors is an integer number (257402880).

Almost surely, 2^25410949641 is an apocalyptic number.

25410949641 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

25410949641 is a deficient number, since it is larger than the sum of its proper divisors (24010403319).

25410949641 is a wasteful number, since it uses less digits than its factorization.

25410949641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561 (or 548 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The spelling of 25410949641 in words is "twenty-five billion, four hundred ten million, nine hundred forty-nine thousand, six hundred forty-one".