25812586980 has 48 divisors (see below), whose sum is σ = 80305827840. Its totient is φ = 6883356384.

The previous prime is 25812586967. The next prime is 25812586981. The reversal of 25812586980 is 8968521852.

It is a happy number.

25812586980 is a `hidden beast` number, since 2 + 58 + 1 + 2 + 586 + 9 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (25812586981) 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, 23900004 + ... + 23901083.

It is an arithmetic number, because the mean of its divisors is an integer number (1673038080).

Almost surely, 2^25812586980 is an apocalyptic number.

25812586980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25812586980 is an abundant number, since it is smaller than the sum of its proper divisors (54493240860).

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

25812586980 is a wasteful number, since it uses less digits than its factorization.

25812586980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47801105 (or 47801097 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 54.

The spelling of 25812586980 in words is "twenty-five billion, eight hundred twelve million, five hundred eighty-six thousand, nine hundred eighty".