25530090852 has 48 divisors (see below), whose sum is σ = 68112696960. Its totient is φ = 7290834432.

The previous prime is 25530090851. The next prime is 25530090871. The reversal of 25530090852 is 25809003552.

It is a super-2 number, since 2×25530090852² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 25530090852.

It is not an unprimeable number, because it can be changed into a prime (25530090851) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 107458 + ... + 250214.

It is an arithmetic number, because the mean of its divisors is an integer number (1419014520).

Almost surely, 2^25530090852 is an apocalyptic number.

It is an amenable number.

25530090852 is an abundant number, since it is smaller than the sum of its proper divisors (42582606108).

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

25530090852 is a wasteful number, since it uses less digits than its factorization.

25530090852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144900 (or 144898 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 39.

The spelling of 25530090852 in words is "twenty-five billion, five hundred thirty million, ninety thousand, eight hundred fifty-two".