25125515253 has 32 divisors (see below), whose sum is σ = 37670486400. Its totient is φ = 16550172288.

The previous prime is 25125515249. The next prime is 25125515299. The reversal of 25125515253 is 35251552152.

25125515253 is a `hidden beast` number, since 2 + 5 + 1 + 2 + 551 + 52 + 53 = 666.

It is not a de Polignac number, because 25125515253 - 2² = 25125515249 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25125515213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 742225 + ... + 775337.

It is an arithmetic number, because the mean of its divisors is an integer number (1177202700).

Almost surely, 2^25125515253 is an apocalyptic number.

It is an amenable number.

25125515253 is a deficient number, since it is larger than the sum of its proper divisors (12544971147).

25125515253 is a wasteful number, since it uses less digits than its factorization.

25125515253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33458 (or 33452 counting only the distinct ones).

The product of its digits is 75000, while the sum is 36.

The spelling of 25125515253 in words is "twenty-five billion, one hundred twenty-five million, five hundred fifteen thousand, two hundred fifty-three".