25722369 has 6 divisors (see below), whose sum is σ = 37154546. Its totient is φ = 17148240.

The previous prime is 25722313. The next prime is 25722401. The reversal of 25722369 is 96322752.

25722369 is a `hidden beast` number, since 2 + 572 + 23 + 69 = 666.

It can be written as a sum of positive squares in only one way, i.e., 23648769 + 2073600 = 4863^2 + 1440^2 .

It is a de Polignac number, because none of the positive numbers 2^k-25722369 is a prime.

It is a super-2 number, since 2×25722369² = 1323280533944322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25722269) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1429012 + ... + 1429029.

Almost surely, 2^25722369 is an apocalyptic number.

It is an amenable number.

25722369 is a deficient number, since it is larger than the sum of its proper divisors (11432177).

25722369 is a wasteful number, since it uses less digits than its factorization.

25722369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2858047 (or 2858044 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 25722369 is about 5071.7224884648. The cubic root of 25722369 is about 295.1913686969.

The spelling of 25722369 in words is "twenty-five million, seven hundred twenty-two thousand, three hundred sixty-nine".