22015025 has 12 divisors (see below), whose sum is σ = 28486272. Its totient is φ = 16845840.

The previous prime is 22015013. The next prime is 22015027. The reversal of 22015025 is 52051022.

It is not a de Polignac number, because 22015025 - 2¹⁶ = 21949489 is a prime.

It is a super-2 number, since 2×22015025² = 969322651501250, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22014994 and 22015012.

It is not an unprimeable number, because it can be changed into a prime (22015027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18569 + ... + 19718.

It is an arithmetic number, because the mean of its divisors is an integer number (2373856).

Almost surely, 2^22015025 is an apocalyptic number.

22015025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22015025 is a deficient number, since it is larger than the sum of its proper divisors (6471247).

22015025 is a wasteful number, since it uses less digits than its factorization.

22015025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38320 (or 38315 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 22015025 is about 4692.0171568314. The cubic root of 22015025 is about 280.2677073993.

Adding to 22015025 its reverse (52051022), we get a palindrome (74066047).

The spelling of 22015025 in words is "twenty-two million, fifteen thousand, twenty-five".