25204586940 has 144 divisors (see below), whose sum is σ = 85384641888. Its totient is φ = 6204190464.

The previous prime is 25204586873. The next prime is 25204586941. The reversal of 25204586940 is 4968540252.

25204586940 is a `hidden beast` number, since 2 + 5 + 20 + 4 + 586 + 9 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25204586941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 136287 + ... + 262646.

It is an arithmetic number, because the mean of its divisors is an integer number (592948902).

Almost surely, 2^25204586940 is an apocalyptic number.

25204586940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25204586940 is an abundant number, since it is smaller than the sum of its proper divisors (60180054948).

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

25204586940 is a wasteful number, since it uses less digits than its factorization.

25204586940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398970 (or 398956 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The spelling of 25204586940 in words is "twenty-five billion, two hundred four million, five hundred eighty-six thousand, nine hundred forty".