25526861 has 4 divisors (see below), whose sum is σ = 26870400. Its totient is φ = 24183324.

The previous prime is 25526833. The next prime is 25526863. The reversal of 25526861 is 16862552.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 25526861 - 2¹⁴ = 25510477 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25526863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 671741 + ... + 671778.

It is an arithmetic number, because the mean of its divisors is an integer number (6717600).

Almost surely, 2^25526861 is an apocalyptic number.

It is an amenable number.

25526861 is a deficient number, since it is larger than the sum of its proper divisors (1343539).

25526861 is a wasteful number, since it uses less digits than its factorization.

25526861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343538.

The product of its digits is 28800, while the sum is 35.

The square root of 25526861 is about 5052.4114044682. The cubic root of 25526861 is about 294.4415788601.

The spelling of 25526861 in words is "twenty-five million, five hundred twenty-six thousand, eight hundred sixty-one".