25435251253 has 8 divisors (see below), whose sum is σ = 26517842208. Its totient is φ = 24374981904.

The previous prime is 25435251229. The next prime is 25435251319. The reversal of 25435251253 is 35215253452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25435251253 - 2¹³ = 25435243061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25435251203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5578075 + ... + 5582632.

It is an arithmetic number, because the mean of its divisors is an integer number (3314730276).

Almost surely, 2^25435251253 is an apocalyptic number.

It is an amenable number.

25435251253 is a deficient number, since it is larger than the sum of its proper divisors (1082590955).

25435251253 is a wasteful number, since it uses less digits than its factorization.

25435251253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11160803.

The product of its digits is 180000, while the sum is 37.

The spelling of 25435251253 in words is "twenty-five billion, four hundred thirty-five million, two hundred fifty-one thousand, two hundred fifty-three".