25722738 has 16 divisors (see below), whose sum is σ = 57161760. Its totient is φ = 8574228.

The previous prime is 25722737. The next prime is 25722743. The reversal of 25722738 is 83722752.

It is a happy number.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (25722737) 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, 238120 + ... + 238227.

It is an arithmetic number, because the mean of its divisors is an integer number (3572610).

Almost surely, 2^25722738 is an apocalyptic number.

25722738 is an abundant number, since it is smaller than the sum of its proper divisors (31439022).

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

25722738 is a wasteful number, since it uses less digits than its factorization.

25722738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 476358 (or 476352 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 25722738 is about 5071.7588665078. The cubic root of 25722738 is about 295.1927802451.

The spelling of 25722738 in words is "twenty-five million, seven hundred twenty-two thousand, seven hundred thirty-eight".