25535149 has 6 divisors (see below), whose sum is σ = 25993934. Its totient is φ = 25077720.

The previous prime is 25535119. The next prime is 25535161. The reversal of 25535149 is 94153552.

It can be written as a sum of positive squares in only one way, i.e., 15069924 + 10465225 = 3882^2 + 3235^2 .

It is not a de Polignac number, because 25535149 - 2⁷ = 25535021 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 (25535119) 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, 39144 + ... + 39790.

Almost surely, 2^25535149 is an apocalyptic number.

It is an amenable number.

25535149 is a deficient number, since it is larger than the sum of its proper divisors (458785).

25535149 is an frugal number, since it uses more digits than its factorization.

25535149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1355 (or 708 counting only the distinct ones).

The product of its digits is 27000, while the sum is 34.

The square root of 25535149 is about 5053.2315403116. The cubic root of 25535149 is about 294.4734416071.

The spelling of 25535149 in words is "twenty-five million, five hundred thirty-five thousand, one hundred forty-nine".