25221012151 has 4 divisors (see below), whose sum is σ = 25504394400. Its totient is φ = 24937629904.

The previous prime is 25221012143. The next prime is 25221012203. The reversal of 25221012151 is 15121012252.

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 25221012151 - 2³ = 25221012143 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 (25221013151) 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, 141690991 + ... + 141691168.

It is an arithmetic number, because the mean of its divisors is an integer number (6376098600).

Almost surely, 2^25221012151 is an apocalyptic number.

25221012151 is a deficient number, since it is larger than the sum of its proper divisors (283382249).

25221012151 is an equidigital number, since it uses as much as digits as its factorization.

25221012151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283382248.

The product of its (nonzero) digits is 400, while the sum is 22.

It can be divided in two parts, 2522101 and 2151, that added together give a palindrome (2524252).

The spelling of 25221012151 in words is "twenty-five billion, two hundred twenty-one million, twelve thousand, one hundred fifty-one".