7825641 has 8 divisors (see below), whose sum is σ = 10656384. Its totient is φ = 5106000.

The previous prime is 7825639. The next prime is 7825651. The reversal of 7825641 is 1465287.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7825641 - 2¹ = 7825639 is a prime.

It is a super-2 number, since 2×7825641² = 122481314121762, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (7825651) 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, 27610 + ... + 27891.

It is an arithmetic number, because the mean of its divisors is an integer number (1332048).

Almost surely, 2^7825641 is an apocalyptic number.

It is an amenable number.

7825641 is a deficient number, since it is larger than the sum of its proper divisors (2830743).

7825641 is a wasteful number, since it uses less digits than its factorization.

7825641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55551.

The product of its digits is 13440, while the sum is 33.

The square root of 7825641 is about 2797.4347177369. The cubic root of 7825641 is about 198.5363227082.

The spelling of 7825641 in words is "seven million, eight hundred twenty-five thousand, six hundred forty-one".