25021433620 has 48 divisors (see below), whose sum is σ = 54766752768. Its totient is φ = 9591655680.

The previous prime is 25021433617. The next prime is 25021433623. The reversal of 25021433620 is 2633412052.

It is an interprime number because it is at equal distance from previous prime (25021433617) and next prime (25021433623).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25021433623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132049 + ... + 259768.

It is an arithmetic number, because the mean of its divisors is an integer number (1140974016).

Almost surely, 2^25021433620 is an apocalyptic number.

25021433620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25021433620 is an abundant number, since it is smaller than the sum of its proper divisors (29745319148).

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

25021433620 is a wasteful number, since it uses less digits than its factorization.

25021433620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391960 (or 391958 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 25021433620 its reverse (2633412052), we get a palindrome (27654845672).

The spelling of 25021433620 in words is "twenty-five billion, twenty-one million, four hundred thirty-three thousand, six hundred twenty".