25126226245 has 4 divisors (see below), whose sum is σ = 30151471500. Its totient is φ = 20100980992.

The previous prime is 25126226243. The next prime is 25126226269. The reversal of 25126226245 is 54262262152.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6456283201 + 18669943044 = 80351^2 + 136638^2 .

It is a cyclic number.

It is not a de Polignac number, because 25126226245 - 2¹ = 25126226243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25126226243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2512622620 + ... + 2512622629.

It is an arithmetic number, because the mean of its divisors is an integer number (7537867875).

Almost surely, 2^25126226245 is an apocalyptic number.

It is an amenable number.

25126226245 is a deficient number, since it is larger than the sum of its proper divisors (5025245255).

25126226245 is an equidigital number, since it uses as much as digits as its factorization.

25126226245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5025245254.

The product of its digits is 115200, while the sum is 37.

Adding to 25126226245 its reverse (54262262152), we get a palindrome (79388488397).

The spelling of 25126226245 in words is "twenty-five billion, one hundred twenty-six million, two hundred twenty-six thousand, two hundred forty-five".