25022727492 has 36 divisors (see below), whose sum is σ = 67918833360. Its totient is φ = 7149350544.

The previous prime is 25022727491. The next prime is 25022727539. The reversal of 25022727492 is 29472722052.

It is a super-2 number, since 2×25022727492² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (25022727491) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21277242 + ... + 21278417.

It is an arithmetic number, because the mean of its divisors is an integer number (1886634260).

Almost surely, 2^25022727492 is an apocalyptic number.

It is an amenable number.

25022727492 is an abundant number, since it is smaller than the sum of its proper divisors (42896105868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25022727492 is a wasteful number, since it uses less digits than its factorization.

25022727492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42555680 (or 42555671 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 42.

The spelling of 25022727492 in words is "twenty-five billion, twenty-two million, seven hundred twenty-seven thousand, four hundred ninety-two".