25851854380 has 24 divisors (see below), whose sum is σ = 59224248720. Its totient is φ = 9400674240.

The previous prime is 25851854363. The next prime is 25851854383. The reversal of 25851854380 is 8345815852.

It is not an unprimeable number, because it can be changed into a prime (25851854383) 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, 58753995 + ... + 58754434.

It is an arithmetic number, because the mean of its divisors is an integer number (2467677030).

Almost surely, 2^25851854380 is an apocalyptic number.

25851854380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25851854380 is an abundant number, since it is smaller than the sum of its proper divisors (33372394340).

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

25851854380 is a wasteful number, since it uses less digits than its factorization.

25851854380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117508449 (or 117508447 counting only the distinct ones).

The product of its (nonzero) digits is 1536000, while the sum is 49.

The spelling of 25851854380 in words is "twenty-five billion, eight hundred fifty-one million, eight hundred fifty-four thousand, three hundred eighty".