22525481 has 6 divisors (see below), whose sum is σ = 24759546. Its totient is φ = 20477600.

The previous prime is 22525471. The next prime is 22525483. The reversal of 22525481 is 18452522.

22525481 = 1426² + 1427² + ... + 1436².

It can be written as a sum of positive squares in only one way, i.e., 22477081 + 48400 = 4741^2 + 220^2 .

It is not a de Polignac number, because 22525481 - 2¹⁸ = 22263337 is a prime.

It is a super-2 number, since 2×22525481² = 1014794588562722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22525483) 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, 92960 + ... + 93201.

It is an arithmetic number, because the mean of its divisors is an integer number (4126591).

Almost surely, 2^22525481 is an apocalyptic number.

It is an amenable number.

22525481 is a deficient number, since it is larger than the sum of its proper divisors (2234065).

22525481 is a wasteful number, since it uses less digits than its factorization.

22525481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186183 (or 186172 counting only the distinct ones).

The product of its digits is 6400, while the sum is 29.

The square root of 22525481 is about 4746.1016634708. The cubic root of 22525481 is about 282.4173397440.

The spelling of 22525481 in words is "twenty-two million, five hundred twenty-five thousand, four hundred eighty-one".