25213510443450 has 96 divisors (see below), whose sum is σ = 71900711917056. Its totient is φ = 5727731693760.

The previous prime is 25213510443413. The next prime is 25213510443509. The reversal of 25213510443450 is 5434401531252.

It is a super-2 number, since 2×25213510443450² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25213510443399 and 25213510443408.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 73487952 + ... + 73830251.

It is an arithmetic number, because the mean of its divisors is an integer number (748965749136).

Almost surely, 2^{25213510443450} is an apocalyptic number.

25213510443450 is an abundant number, since it is smaller than the sum of its proper divisors (46687201473606).

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

25213510443450 is a wasteful number, since it uses less digits than its factorization.

25213510443450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147318388 (or 147318383 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 39.

The spelling of 25213510443450 in words is "twenty-five trillion, two hundred thirteen billion, five hundred ten million, four hundred forty-three thousand, four hundred fifty".