25139774223 has 28 divisors (see below), whose sum is σ = 37714533360. Its totient is φ = 16750017216.

The previous prime is 25139774201. The next prime is 25139774273. The reversal of 25139774223 is 32247793152.

25139774223 is a `hidden beast` number, since 2 + 513 + 9 + 77 + 42 + 23 = 666.

It is not a de Polignac number, because 25139774223 - 2¹² = 25139770127 is a prime.

It is a super-4 number, since 4×25139774223⁴ (a number of 43 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25139774273) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 1360615 + ... + 1378967.

It is an arithmetic number, because the mean of its divisors is an integer number (1346947620).

Almost surely, 2^25139774223 is an apocalyptic number.

25139774223 is a deficient number, since it is larger than the sum of its proper divisors (12574759137).

25139774223 is an equidigital number, since it uses as much as digits as its factorization.

25139774223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20250 (or 20235 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The spelling of 25139774223 in words is "twenty-five billion, one hundred thirty-nine million, seven hundred seventy-four thousand, two hundred twenty-three".