25222534501 has 4 divisors (see below), whose sum is σ = 26092277100. Its totient is φ = 24352791904.

The previous prime is 25222534489. The next prime is 25222534507. The reversal of 25222534501 is 10543522252.

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 15675290401 + 9547244100 = 125201^2 + 97710^2 .

It is a cyclic number.

It is not a de Polignac number, because 25222534501 - 2¹¹ = 25222532453 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 (25222534507) 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, 434871256 + ... + 434871313.

It is an arithmetic number, because the mean of its divisors is an integer number (6523069275).

Almost surely, 2^25222534501 is an apocalyptic number.

It is an amenable number.

25222534501 is a deficient number, since it is larger than the sum of its proper divisors (869742599).

25222534501 is an equidigital number, since it uses as much as digits as its factorization.

25222534501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 869742598.

The product of its (nonzero) digits is 24000, while the sum is 31.

The spelling of 25222534501 in words is "twenty-five billion, two hundred twenty-two million, five hundred thirty-four thousand, five hundred one".