25254445667 has 12 divisors (see below), whose sum is σ = 27837703320. Its totient is φ = 22893509760.

The previous prime is 25254445663. The next prime is 25254445759. The reversal of 25254445667 is 76654445252.

It is not a de Polignac number, because 25254445667 - 2² = 25254445663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25254445663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 252917 + ... + 338342.

It is an arithmetic number, because the mean of its divisors is an integer number (2319808610).

Almost surely, 2^25254445667 is an apocalyptic number.

25254445667 is a deficient number, since it is larger than the sum of its proper divisors (2583257653).

25254445667 is a wasteful number, since it uses less digits than its factorization.

25254445667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591634 (or 591623 counting only the distinct ones).

The product of its digits is 8064000, while the sum is 50.

The spelling of 25254445667 in words is "twenty-five billion, two hundred fifty-four million, four hundred forty-five thousand, six hundred sixty-seven".