20237725 has 12 divisors (see below), whose sum is σ = 25171380. Its totient is φ = 16140800.

The previous prime is 20237719. The next prime is 20237741. The reversal of 20237725 is 52773202.

It can be written as a sum of positive squares in 6 ways, for example, as 2277081 + 17960644 = 1509^2 + 4238^2 .

It is not a de Polignac number, because 20237725 - 2¹⁵ = 20204957 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20237693 and 20237702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8685 + ... + 10765.

It is an arithmetic number, because the mean of its divisors is an integer number (2097615).

Almost surely, 2^20237725 is an apocalyptic number.

20237725 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

20237725 is a deficient number, since it is larger than the sum of its proper divisors (4933655).

20237725 is a wasteful number, since it uses less digits than its factorization.

20237725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2480 (or 2475 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 20237725 is about 4498.6359043603. The cubic root of 20237725 is about 272.5130033354.

The spelling of 20237725 in words is "twenty million, two hundred thirty-seven thousand, seven hundred twenty-five".