26215285 has 16 divisors (see below), whose sum is σ = 32990976. Its totient is φ = 19959808.

The previous prime is 26215283. The next prime is 26215289. The reversal of 26215285 is 58251262.

It is a cyclic number.

It is not a de Polignac number, because 26215285 - 2¹ = 26215283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26215283) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29112 + ... + 29998.

It is an arithmetic number, because the mean of its divisors is an integer number (2061936).

Almost surely, 2^26215285 is an apocalyptic number.

It is an amenable number.

26215285 is a deficient number, since it is larger than the sum of its proper divisors (6775691).

26215285 is a wasteful number, since it uses less digits than its factorization.

26215285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172.

The product of its digits is 9600, while the sum is 31.

The square root of 26215285 is about 5120.0864250518. The cubic root of 26215285 is about 297.0650282548.

The spelling of 26215285 in words is "twenty-six million, two hundred fifteen thousand, two hundred eighty-five".