25295287040 has 36 divisors (see below), whose sum is σ = 60590120304. Its totient is φ = 10118114304.

The previous prime is 25295287021. The next prime is 25295287067. The reversal of 25295287040 is 4078259252.

It is a junction number, because it is equal to n+sod(n) for n = 25295286982 and 25295287000.

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, 9879692 + ... + 9882251.

Almost surely, 2^25295287040 is an apocalyptic number.

25295287040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25295287040 is an abundant number, since it is smaller than the sum of its proper divisors (35294833264).

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

25295287040 is an equidigital number, since it uses as much as digits as its factorization.

25295287040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19761964 (or 19761950 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 44.

The spelling of 25295287040 in words is "twenty-five billion, two hundred ninety-five million, two hundred eighty-seven thousand, forty".