25222510405 has 8 divisors (see below), whose sum is σ = 30291487992. Its totient is φ = 20161691328.

The previous prime is 25222510399. The next prime is 25222510433. The reversal of 25222510405 is 50401522252.

It can be written as a sum of positive squares in 4 ways, for example, as 565345729 + 24657164676 = 23777^2 + 157026^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 25222510405 - 2¹¹ = 25222508357 is a prime.

It is a super-2 number, since 2×25222510405² (a number of 22 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 2032822 + ... + 2045191.

It is an arithmetic number, because the mean of its divisors is an integer number (3786435999).

Almost surely, 2^25222510405 is an apocalyptic number.

It is an amenable number.

25222510405 is a deficient number, since it is larger than the sum of its proper divisors (5068977587).

25222510405 is a wasteful number, since it uses less digits than its factorization.

25222510405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4079255.

The product of its (nonzero) digits is 8000, while the sum is 28.

The spelling of 25222510405 in words is "twenty-five billion, two hundred twenty-two million, five hundred ten thousand, four hundred five".