25742051 has 4 divisors (see below), whose sum is σ = 25805400. Its totient is φ = 25678704.

The previous prime is 25742039. The next prime is 25742081. The reversal of 25742051 is 15024752.

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

It is a cyclic number.

It is not a de Polignac number, because 25742051 - 2⁶ = 25741987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25742051.

It is not an unprimeable number, because it can be changed into a prime (25742021) 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, 31061 + ... + 31878.

It is an arithmetic number, because the mean of its divisors is an integer number (6451350).

Almost surely, 2^25742051 is an apocalyptic number.

25742051 is a deficient number, since it is larger than the sum of its proper divisors (63349).

25742051 is an equidigital number, since it uses as much as digits as its factorization.

25742051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63348.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 25742051 is about 5073.6624838473. The cubic root of 25742051 is about 295.2666400852.

The spelling of 25742051 in words is "twenty-five million, seven hundred forty-two thousand, fifty-one".