25145039040 has 280 divisors, whose sum is σ = 87867591600. Its totient is φ = 6092359680.

The previous prime is 25145039027. The next prime is 25145039063. The reversal of 25145039040 is 4093054152.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 25145038992 and 25145039010.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 14054466 + ... + 14056254.

Almost surely, 2^25145039040 is an apocalyptic number.

25145039040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25145039040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43933795800).

25145039040 is an abundant number, since it is smaller than the sum of its proper divisors (62722552560).

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

25145039040 is an equidigital number, since it uses as much as digits as its factorization.

25145039040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1853 (or 1810 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The spelling of 25145039040 in words is "twenty-five billion, one hundred forty-five million, thirty-nine thousand, forty".