25285412819 has 8 divisors (see below), whose sum is σ = 26633112000. Its totient is φ = 23939402472.

The previous prime is 25285412813. The next prime is 25285412827. The reversal of 25285412819 is 91821458252.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25285412819 is a prime.

It is a super-2 number, since 2×25285412819² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25285412813) 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, 391409 + ... + 451410.

It is an arithmetic number, because the mean of its divisors is an integer number (3329139000).

Almost surely, 2^25285412819 is an apocalyptic number.

25285412819 is a deficient number, since it is larger than the sum of its proper divisors (1347699181).

25285412819 is a wasteful number, since it uses less digits than its factorization.

25285412819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 844417.

The product of its digits is 460800, while the sum is 47.

The spelling of 25285412819 in words is "twenty-five billion, two hundred eighty-five million, four hundred twelve thousand, eight hundred nineteen".