2545400123 has 8 divisors (see below), whose sum is σ = 3080148192. Its totient is φ = 2053431936.

The previous prime is 2545400119. The next prime is 2545400129. The reversal of 2545400123 is 3210045452.

It is a happy number.

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 2545400123 - 2² = 2545400119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2545400092 and 2545400101.

It is not an unprimeable number, because it can be changed into a prime (2545400129) 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, 10694840 + ... + 10695077.

It is an arithmetic number, because the mean of its divisors is an integer number (385018524).

Almost surely, 2^2545400123 is an apocalyptic number.

2545400123 is a deficient number, since it is larger than the sum of its proper divisors (534748069).

2545400123 is a wasteful number, since it uses less digits than its factorization.

2545400123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21389941.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2545400123 is about 50451.9585645592. The cubic root of 2545400123 is about 1365.3752313644.

Adding to 2545400123 its reverse (3210045452), we get a palindrome (5755445575).

The spelling of 2545400123 in words is "two billion, five hundred forty-five million, four hundred thousand, one hundred twenty-three".