25046422446 has 16 divisors (see below), whose sum is σ = 50094440784. Its totient is φ = 8348541504.

The previous prime is 25046422409. The next prime is 25046422519. The reversal of 25046422446 is 64422464052.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 263530 + ... + 345746.

It is an arithmetic number, because the mean of its divisors is an integer number (3130902549).

Almost surely, 2^25046422446 is an apocalyptic number.

25046422446 is an abundant number, since it is smaller than the sum of its proper divisors (25048018338).

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

25046422446 is a wasteful number, since it uses less digits than its factorization.

25046422446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132995.

The product of its (nonzero) digits is 368640, while the sum is 39.

Adding to 25046422446 its reverse (64422464052), we get a palindrome (89468886498).

The spelling of 25046422446 in words is "twenty-five billion, forty-six million, four hundred twenty-two thousand, four hundred forty-six".