25226145090 has 160 divisors (see below), whose sum is σ = 68861460096. Its totient is φ = 6625463040.

The previous prime is 25226145089. The next prime is 25226145101. The reversal of 25226145090 is 9054162252.

25226145090 is a `hidden beast` number, since 2 + 522 + 6 + 1 + 45 + 0 + 90 = 666.

It is a super-2 number, since 2×25226145090² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 17603014 + ... + 17604446.

Almost surely, 2^25226145090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25226145090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34430730048).

25226145090 is an abundant number, since it is smaller than the sum of its proper divisors (43635315006).

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

25226145090 is a wasteful number, since it uses less digits than its factorization.

25226145090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1766 (or 1757 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The spelling of 25226145090 in words is "twenty-five billion, two hundred twenty-six million, one hundred forty-five thousand, ninety".