25422040442 has 8 divisors (see below), whose sum is σ = 38141813856. Its totient is φ = 12708102492.

The previous prime is 25422040439. The next prime is 25422040463. The reversal of 25422040442 is 24404022452.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 1447958 + ... + 1465409.

It is an arithmetic number, because the mean of its divisors is an integer number (4767726732).

Almost surely, 2^25422040442 is an apocalyptic number.

25422040442 is a deficient number, since it is larger than the sum of its proper divisors (12719773414).

25422040442 is a wasteful number, since it uses less digits than its factorization.

25422040442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2917732.

The product of its (nonzero) digits is 20480, while the sum is 29.

Adding to 25422040442 its reverse (24404022452), we get a palindrome (49826062894).

The spelling of 25422040442 in words is "twenty-five billion, four hundred twenty-two million, forty thousand, four hundred forty-two".