222012525 has 24 divisors (see below), whose sum is σ = 419498944. Its totient is φ = 101491200.

The previous prime is 222012517. The next prime is 222012541. The reversal of 222012525 is 525210222.

It is not a de Polignac number, because 222012525 - 2³ = 222012517 is a prime.

It is a super-2 number, since 2×222012525² = 98579122513751250, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 210916 + ... + 211965.

Almost surely, 2^222012525 is an apocalyptic number.

222012525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

222012525 is a deficient number, since it is larger than the sum of its proper divisors (197486419).

222012525 is a wasteful number, since it uses less digits than its factorization.

222012525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422901 (or 422896 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 222012525 is about 14900.0847313027. The cubic root of 222012525 is about 605.5162817475.

Adding to 222012525 its reverse (525210222), we get a palindrome (747222747).

The spelling of 222012525 in words is "two hundred twenty-two million, twelve thousand, five hundred twenty-five".