25422413521 has 16 divisors (see below), whose sum is σ = 27459020160. Its totient is φ = 23464425600.

The previous prime is 25422413503. The next prime is 25422413539. The reversal of 25422413521 is 12531422452.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (25422413503) and next prime (25422413539).

It is a cyclic number.

It is not a de Polignac number, because 25422413521 - 2¹³ = 25422405329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25422413551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1190686 + ... + 1211848.

It is an arithmetic number, because the mean of its divisors is an integer number (1716188760).

Almost surely, 2^25422413521 is an apocalyptic number.

It is an amenable number.

25422413521 is a deficient number, since it is larger than the sum of its proper divisors (2036606639).

25422413521 is a wasteful number, since it uses less digits than its factorization.

25422413521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23016.

The product of its digits is 19200, while the sum is 31.

Adding to 25422413521 its reverse (12531422452), we get a palindrome (37953835973).

The spelling of 25422413521 in words is "twenty-five billion, four hundred twenty-two million, four hundred thirteen thousand, five hundred twenty-one".