25660141 has 4 divisors (see below), whose sum is σ = 27634012. Its totient is φ = 23686272.

The previous prime is 25660133. The next prime is 25660147. The reversal of 25660141 is 14106652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2340900 + 23319241 = 1530^2 + 4829^2 .

It is a cyclic number.

It is not a de Polignac number, because 25660141 - 2³ = 25660133 is a prime.

It is a super-2 number, since 2×25660141² = 1316885672279762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25660147) 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, 986916 + ... + 986941.

It is an arithmetic number, because the mean of its divisors is an integer number (6908503).

Almost surely, 2^25660141 is an apocalyptic number.

It is an amenable number.

25660141 is a deficient number, since it is larger than the sum of its proper divisors (1973871).

25660141 is a wasteful number, since it uses less digits than its factorization.

25660141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1973870.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 25660141 is about 5065.5839742324. The cubic root of 25660141 is about 294.9531324567.

Adding to 25660141 its reverse (14106652), we get a palindrome (39766793).

The spelling of 25660141 in words is "twenty-five million, six hundred sixty thousand, one hundred forty-one".