25226261651 has 4 divisors (see below), whose sum is σ = 25270596600. Its totient is φ = 25181926704.

The previous prime is 25226261623. The next prime is 25226261659. The reversal of 25226261651 is 15616262252.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 25226261651 - 2¹⁸ = 25225999507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25226261659) 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, 22166621 + ... + 22167758.

It is an arithmetic number, because the mean of its divisors is an integer number (6317649150).

Almost surely, 2^25226261651 is an apocalyptic number.

25226261651 is a deficient number, since it is larger than the sum of its proper divisors (44334949).

25226261651 is an equidigital number, since it uses as much as digits as its factorization.

25226261651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44334948.

The product of its digits is 86400, while the sum is 38.

The spelling of 25226261651 in words is "twenty-five billion, two hundred twenty-six million, two hundred sixty-one thousand, six hundred fifty-one".