25345054251 has 16 divisors (see below), whose sum is σ = 40961704320. Its totient is φ = 15360638760.

The previous prime is 25345054249. The next prime is 25345054253. The reversal of 25345054251 is 15245054352.

25345054251 is a `hidden beast` number, since 2 + 534 + 50 + 54 + 25 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (25345054249) and next prime (25345054253).

It is not a de Polignac number, because 25345054251 - 2¹ = 25345054249 is a prime.

It is a super-2 number, since 2×25345054251² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25345054253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42668145 + ... + 42668738.

It is an arithmetic number, because the mean of its divisors is an integer number (2560106520).

Almost surely, 2^25345054251 is an apocalyptic number.

25345054251 is a deficient number, since it is larger than the sum of its proper divisors (15616650069).

25345054251 is a wasteful number, since it uses less digits than its factorization.

25345054251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85336903 (or 85336897 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

The spelling of 25345054251 in words is "twenty-five billion, three hundred forty-five million, fifty-four thousand, two hundred fifty-one".