25040025380 has 12 divisors (see below), whose sum is σ = 52584053340. Its totient is φ = 10016010144.

The previous prime is 25040025347. The next prime is 25040025397. The reversal of 25040025380 is 8352004052.

It can be written as a sum of positive squares in 2 ways, for example, as 3672602404 + 21367422976 = 60602^2 + 146176^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 626000615 + ... + 626000654.

It is an arithmetic number, because the mean of its divisors is an integer number (4382004445).

Almost surely, 2^25040025380 is an apocalyptic number.

25040025380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25040025380 is an abundant number, since it is smaller than the sum of its proper divisors (27544027960).

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

25040025380 is a wasteful number, since it uses less digits than its factorization.

25040025380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1252001278 (or 1252001276 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The spelling of 25040025380 in words is "twenty-five billion, forty million, twenty-five thousand, three hundred eighty".