25235853149 has 16 divisors (see below), whose sum is σ = 28326165504. Its totient is φ = 22324291200.

The previous prime is 25235853119. The next prime is 25235853163. The reversal of 25235853149 is 94135853252.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 25235853149 - 2⁸ = 25235852893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25235853119) 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, 262472 + ... + 345489.

It is an arithmetic number, because the mean of its divisors is an integer number (1770385344).

Almost surely, 2^25235853149 is an apocalyptic number.

It is an amenable number.

25235853149 is a deficient number, since it is larger than the sum of its proper divisors (3090312355).

25235853149 is a wasteful number, since it uses less digits than its factorization.

25235853149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 608108.

The product of its digits is 1296000, while the sum is 47.

The spelling of 25235853149 in words is "twenty-five billion, two hundred thirty-five million, eight hundred fifty-three thousand, one hundred forty-nine".