25275337240 has 64 divisors (see below), whose sum is σ = 58407804000. Its totient is φ = 9837941760.

The previous prime is 25275337223. The next prime is 25275337247. The reversal of 25275337240 is 4273357252.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 25275337193 and 25275337202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25275337247) 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, 618151 + ... + 657769.

Almost surely, 2^25275337240 is an apocalyptic number.

25275337240 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 25275337240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29203902000).

25275337240 is an abundant number, since it is smaller than the sum of its proper divisors (33132466760).

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

25275337240 is a wasteful number, since it uses less digits than its factorization.

25275337240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40060 (or 40056 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 40.

The spelling of 25275337240 in words is "twenty-five billion, two hundred seventy-five million, three hundred thirty-seven thousand, two hundred forty".