35821242457225 has 9 divisors (see below), whose sum is σ = 44418377754517. Its totient is φ = 28656970025440.

The previous prime is 35821242457183. The next prime is 35821242457291. The reversal of 35821242457225 is 52275424212853.

The square root of 35821242457225 is 5985085.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 230902353529 + 35590340103696 = 480523^2 + 5965764^2 .

It is a de Polignac number, because none of the positive numbers 2^k-35821242457225 is a prime.

It is a super-2 number, since 2×35821242457225² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 29326917 + ... + 30523933.

Almost surely, 2^{35821242457225} is an apocalyptic number.

35821242457225 is the 5985085-th square number.

35821242457225 is the 2992543-rd centered octagonal number.

It is an amenable number.

35821242457225 is a deficient number, since it is larger than the sum of its proper divisors (8597135297292).

35821242457225 is an frugal number, since it uses more digits than its factorization.

35821242457225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2394044 (or 1197022 counting only the distinct ones).

The product of its digits is 10752000, while the sum is 52.

The spelling of 35821242457225 in words is "thirty-five trillion, eight hundred twenty-one billion, two hundred forty-two million, four hundred fifty-seven thousand, two hundred twenty-five".