25149755 has 4 divisors (see below), whose sum is σ = 30179712. Its totient is φ = 20119800.

The previous prime is 25149743. The next prime is 25149791. The reversal of 25149755 is 55794152.

It is a happy number.

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

It is not a de Polignac number, because 25149755 - 2⁸ = 25149499 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2514971 + ... + 2514980.

It is an arithmetic number, because the mean of its divisors is an integer number (7544928).

Almost surely, 2^25149755 is an apocalyptic number.

25149755 is a deficient number, since it is larger than the sum of its proper divisors (5029957).

25149755 is an equidigital number, since it uses as much as digits as its factorization.

25149755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5029956.

The product of its digits is 63000, while the sum is 38.

The square root of 25149755 is about 5014.9531403593. The cubic root of 25149755 is about 292.9844602645.

The spelling of 25149755 in words is "twenty-five million, one hundred forty-nine thousand, seven hundred fifty-five".