25115220452 has 48 divisors (see below), whose sum is σ = 53871834240. Its totient is φ = 10004746752.

The previous prime is 25115220451. The next prime is 25115220511. The reversal of 25115220452 is 25402251152.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (25115220451) 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, 417173 + ... + 473564.

It is an arithmetic number, because the mean of its divisors is an integer number (1122329880).

Almost surely, 2^25115220452 is an apocalyptic number.

It is an amenable number.

25115220452 is an abundant number, since it is smaller than the sum of its proper divisors (28756613788).

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

25115220452 is a wasteful number, since it uses less digits than its factorization.

25115220452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890820 (or 890818 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 29.

The spelling of 25115220452 in words is "twenty-five billion, one hundred fifteen million, two hundred twenty thousand, four hundred fifty-two".