25135514245 has 12 divisors (see below), whose sum is σ = 30402085644. Its totient is φ = 19950013440.

The previous prime is 25135514207. The next prime is 25135514273. The reversal of 25135514245 is 54241553152.

It can be written as a sum of positive squares in 2 ways, for example, as 3094251876 + 22041262369 = 55626^2 + 148463^2 .

It is not a de Polignac number, because 25135514245 - 2³³ = 16545579653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75196 + ... + 236485.

It is an arithmetic number, because the mean of its divisors is an integer number (2533507137).

Almost surely, 2^25135514245 is an apocalyptic number.

It is an amenable number.

25135514245 is a deficient number, since it is larger than the sum of its proper divisors (5266571399).

25135514245 is an equidigital number, since it uses as much as digits as its factorization.

25135514245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311940 (or 311813 counting only the distinct ones).

The product of its digits is 120000, while the sum is 37.

The spelling of 25135514245 in words is "twenty-five billion, one hundred thirty-five million, five hundred fourteen thousand, two hundred forty-five".