25481822990 has 32 divisors (see below), whose sum is σ = 50988946176. Its totient is φ = 9105166080.

The previous prime is 25481822953. The next prime is 25481822999. The reversal of 25481822990 is 9922818452.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25481822999) 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, 3157487 + ... + 3165546.

It is an arithmetic number, because the mean of its divisors is an integer number (1593404568).

Almost surely, 2^25481822990 is an apocalyptic number.

25481822990 is an abundant number, since it is smaller than the sum of its proper divisors (25507123186).

25481822990 is a wasteful number, since it uses less digits than its factorization.

25481822990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6323084.

The product of its (nonzero) digits is 829440, while the sum is 50.

The spelling of 25481822990 in words is "twenty-five billion, four hundred eighty-one million, eight hundred twenty-two thousand, nine hundred ninety".