25140149 has 2 divisors, whose sum is σ = 25140150. Its totient is φ = 25140148.

The previous prime is 25140139. The next prime is 25140197. The reversal of 25140149 is 94104152.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23716900 + 1423249 = 4870^2 + 1193^2 .

It is a cyclic number.

It is not a de Polignac number, because 25140149 - 2⁴ = 25140133 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (25140109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12570074 + 12570075.

It is an arithmetic number, because the mean of its divisors is an integer number (12570075).

Almost surely, 2^25140149 is an apocalyptic number.

It is an amenable number.

25140149 is a deficient number, since it is larger than the sum of its proper divisors (1).

25140149 is an equidigital number, since it uses as much as digits as its factorization.

25140149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 25140149 is about 5013.9953131211. The cubic root of 25140149 is about 292.9471535111.

The spelling of 25140149 in words is "twenty-five million, one hundred forty thousand, one hundred forty-nine".