25141632646 has 16 divisors (see below), whose sum is σ = 40652539200. Its totient is φ = 11592649728.

The previous prime is 25141632643. The next prime is 25141632661. The reversal of 25141632646 is 64623614152.

It is a super-2 number, since 2×25141632646² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 25141632599 and 25141632608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25141632643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 438331 + ... + 492358.

It is an arithmetic number, because the mean of its divisors is an integer number (2540783700).

Almost surely, 2^25141632646 is an apocalyptic number.

25141632646 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

25141632646 is a deficient number, since it is larger than the sum of its proper divisors (15510906554).

25141632646 is a wasteful number, since it uses less digits than its factorization.

25141632646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931743.

The product of its digits is 207360, while the sum is 40.

The spelling of 25141632646 in words is "twenty-five billion, one hundred forty-one million, six hundred thirty-two thousand, six hundred forty-six".