25164246140 has 48 divisors (see below), whose sum is σ = 57714733440. Its totient is φ = 9140201280.

The previous prime is 25164246139. The next prime is 25164246167. The reversal of 25164246140 is 4164246152.

It is a self number, because there is not a number n which added to its sum of digits gives 25164246140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129491 + ... + 259029.

It is an arithmetic number, because the mean of its divisors is an integer number (1202390280).

Almost surely, 2^25164246140 is an apocalyptic number.

25164246140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25164246140 is an abundant number, since it is smaller than the sum of its proper divisors (32550487300).

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

25164246140 is a wasteful number, since it uses less digits than its factorization.

25164246140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130442 (or 130440 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The spelling of 25164246140 in words is "twenty-five billion, one hundred sixty-four million, two hundred forty-six thousand, one hundred forty".