2145222240025 has 12 divisors (see below), whose sum is σ = 2775731038272. Its totient is φ = 1641561365840.

The previous prime is 2145222240011. The next prime is 2145222240103. The reversal of 2145222240025 is 5200422225412.

It is not a de Polignac number, because 2145222240025 - 2¹⁵ = 2145222207257 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1865410069 + ... + 1865411218.

It is an arithmetic number, because the mean of its divisors is an integer number (231310919856).

Almost surely, 2^{2145222240025} is an apocalyptic number.

2145222240025 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2145222240025 is a deficient number, since it is larger than the sum of its proper divisors (630508798247).

2145222240025 is a wasteful number, since it uses less digits than its factorization.

2145222240025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3730821320 (or 3730821315 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 31.

Adding to 2145222240025 its reverse (5200422225412), we get a palindrome (7345644465437).

The spelling of 2145222240025 in words is "two trillion, one hundred forty-five billion, two hundred twenty-two million, two hundred forty thousand, twenty-five".