25145045841630 has 128 divisors (see below), whose sum is σ = 70954807472640. Its totient is φ = 5622392885760.

The previous prime is 25145045841623. The next prime is 25145045841661. The reversal of 25145045841630 is 3614854054152.

It is a self number, because there is not a number n which added to its sum of digits gives 25145045841630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3073344 + ... + 7728876.

It is an arithmetic number, because the mean of its divisors is an integer number (554334433380).

Almost surely, 2^{25145045841630} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25145045841630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35477403736320).

25145045841630 is an abundant number, since it is smaller than the sum of its proper divisors (45809761631010).

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

25145045841630 is a wasteful number, since it uses less digits than its factorization.

25145045841630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4656826.

The product of its (nonzero) digits is 2304000, while the sum is 48.

Adding to 25145045841630 its reverse (3614854054152), we get a palindrome (28759899895782).

The spelling of 25145045841630 in words is "twenty-five trillion, one hundred forty-five billion, forty-five million, eight hundred forty-one thousand, six hundred thirty".