2251220025155 has 8 divisors (see below), whose sum is σ = 2701917864672. Its totient is φ = 1800673463808.

The previous prime is 2251220025149. The next prime is 2251220025181. The reversal of 2251220025155 is 5515200221522.

2251220025155 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2251220025155 - 2¹² = 2251220021059 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37786799 + ... + 37846328.

It is an arithmetic number, because the mean of its divisors is an integer number (337739733084).

Almost surely, 2^{2251220025155} is an apocalyptic number.

2251220025155 is a deficient number, since it is larger than the sum of its proper divisors (450697839517).

2251220025155 is an equidigital number, since it uses as much as digits as its factorization.

2251220025155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75639085.

The product of its (nonzero) digits is 20000, while the sum is 32.

Adding to 2251220025155 its reverse (5515200221522), we get a palindrome (7766420246677).

The spelling of 2251220025155 in words is "two trillion, two hundred fifty-one billion, two hundred twenty million, twenty-five thousand, one hundred fifty-five".