25723730 has 8 divisors (see below), whose sum is σ = 46302732. Its totient is φ = 10289488.

The previous prime is 25723727. The next prime is 25723793. The reversal of 25723730 is 3732752.

It can be written as a sum of positive squares in 2 ways, for example, as 24314761 + 1408969 = 4931^2 + 1187^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×25723730² = 1323420570225800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25723693 and 25723702.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1286177 + ... + 1286196.

Almost surely, 2^25723730 is an apocalyptic number.

25723730 is a deficient number, since it is larger than the sum of its proper divisors (20579002).

25723730 is a wasteful number, since it uses less digits than its factorization.

25723730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2572380.

The product of its (nonzero) digits is 8820, while the sum is 29.

The square root of 25723730 is about 5071.8566620124. The cubic root of 25723730 is about 295.1965749095.

The spelling of 25723730 in words is "twenty-five million, seven hundred twenty-three thousand, seven hundred thirty".