25145535318 has 16 divisors (see below), whose sum is σ = 50628596400. Its totient is φ = 8325590816.

The previous prime is 25145535301. The next prime is 25145535319. The reversal of 25145535318 is 81353554152.

It is a super-2 number, since 2×25145535318² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25145535318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25145535319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14062605 + ... + 14064392.

It is an arithmetic number, because the mean of its divisors is an integer number (3164287275).

Almost surely, 2^25145535318 is an apocalyptic number.

25145535318 is an abundant number, since it is smaller than the sum of its proper divisors (25483061082).

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

25145535318 is a wasteful number, since it uses less digits than its factorization.

25145535318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28127151.

The product of its digits is 360000, while the sum is 42.

The spelling of 25145535318 in words is "twenty-five billion, one hundred forty-five million, five hundred thirty-five thousand, three hundred eighteen".