25473549690 has 96 divisors (see below), whose sum is σ = 68802918912. Its totient is φ = 6533856000.

The previous prime is 25473549677. The next prime is 25473549691. The reversal of 25473549690 is 9694537452.

25473549690 is a `hidden beast` number, since 2 + 5 + 4 + 7 + 3 + 549 + 6 + 90 = 666.

It is a super-2 number, since 2×25473549690² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (25473549691) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 213375 + ... + 310605.

It is an arithmetic number, because the mean of its divisors is an integer number (716697072).

Almost surely, 2^25473549690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25473549690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34401459456).

25473549690 is an abundant number, since it is smaller than the sum of its proper divisors (43329369222).

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

25473549690 is a wasteful number, since it uses less digits than its factorization.

25473549690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97356 (or 97353 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 54.

The spelling of 25473549690 in words is "twenty-five billion, four hundred seventy-three million, five hundred forty-nine thousand, six hundred ninety".