25545355615622 has 4 divisors (see below), whose sum is σ = 38318033423436. Its totient is φ = 12772677807810.

The previous prime is 25545355615621. The next prime is 25545355615631. The reversal of 25545355615622 is 22651655354552.

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

It is a super-2 number, since 2×25545355615622² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25545355615621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6386338903904 + ... + 6386338903907.

It is an arithmetic number, because the mean of its divisors is an integer number (9579508355859).

Almost surely, 2^{25545355615622} is an apocalyptic number.

25545355615622 is a deficient number, since it is larger than the sum of its proper divisors (12772677807814).

25545355615622 is a wasteful number, since it uses less digits than its factorization.

25545355615622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12772677807813.

The product of its digits is 54000000, while the sum is 56.

The spelling of 25545355615622 in words is "twenty-five trillion, five hundred forty-five billion, three hundred fifty-five million, six hundred fifteen thousand, six hundred twenty-two".