25825542738 has 16 divisors (see below), whose sum is σ = 52108176096. Its totient is φ = 8532332480.

The previous prime is 25825542737. The next prime is 25825542749. The reversal of 25825542738 is 83724552852.

It is not an unprimeable number, because it can be changed into a prime (25825542737) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19044708 + ... + 19046063.

It is an arithmetic number, because the mean of its divisors is an integer number (3256761006).

Almost surely, 2^25825542738 is an apocalyptic number.

25825542738 is an abundant number, since it is smaller than the sum of its proper divisors (26282633358).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25825542738 is a wasteful number, since it uses less digits than its factorization.

25825542738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38090889.

The product of its digits is 5376000, while the sum is 51.

The spelling of 25825542738 in words is "twenty-five billion, eight hundred twenty-five million, five hundred forty-two thousand, seven hundred thirty-eight".